| Accounting Policies, by Policy (Policies) | 9 Months Ended |
| Sep. 30, 2023 |
| Summary of Significant Accounting Policies [Abstract] | |
| Basis of Presentation | Basis of Presentation The accompanying unaudited consolidated financial statements as of
and for the nine months ended September 30, 2023 and 2022 have been prepared in accordance with accounting principles generally accepted
in the United States (“GAAP”) and pursuant to applicable rules and regulations of the Securities and Exchange Commission (“SEC”).
These financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included
in the Company’s Annual Report on Form 10-K for the fiscal years ended December 31, 2022, and 2021, which was filed with the SEC
on March 17, 2023. The accompanying unaudited consolidated financial
statements have been prepared on a consistent basis with the audited consolidated financial statements for the fiscal years ended December
31, 2022, and 2021, and include all adjustments, consisting of only normal recurring adjustments, necessary to fairly state the information
set forth herein. There have been no changes to the Company’s significant accounting policies described in its Annual Report on
Form 10-K for the fiscal years ended December 31, 2022 and 2021 that have had a material impact on the consolidated financial statements
and the related notes. The results reported for the interim period presented
are not necessarily indicative of results that may be expected for any subsequent quarter or for the full year December 31, 2023. These
unaudited consolidated financial statements include all adjustments and accruals that are necessary for a fair statement of all interim
periods reported herein. |
| Principles of Consolidation | Principles of Consolidation The consolidated financial statements include
the accounts of Cyngn Inc. and its wholly owned subsidiaries. Intercompany accounts and transactions have been eliminated upon consolidation. |
| Foreign Currency Translation | Foreign Currency Translation The functional and reporting currency for Cyngn is the U.S. dollar.
Monetary assets and liabilities denominated in currencies other than U.S. dollar are translated into the U.S. dollar at period end rates,
income and expenses are translated at the weighted average exchange rates for the period and equity is translated at the historical exchange
rates. Foreign currency translation adjustments and transactional gains and losses are immaterial to the consolidated financial statements. |
| Use of Estimates | Use of Estimates The preparation of financial statements in conformity with GAAP requires
management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities
and disclosure of contingent assets and liabilities as of the balance sheet date, as well as reported amounts of revenue and expenses
during the reporting period. The Company’s significant estimates and judgments include but are not limited to internal-use software
and developed software to be sold, leased or marketed, warrants and share-based compensation. Management bases its estimates on historical
experience and on various other assumptions believed to be reasonable, the results of which form the basis for making judgments about
the carrying values of assets and liabilities. Actual results could differ from those estimates. |
| Concentration of Credit Risk | Concentration of Credit Risk Financial instruments that potentially subject
the Company to concentrations of credit risk consist of cash, which is placed with high-credit-quality financial institutions and at
times exceeds federally insured limits. Cash maintained with domestic financial institutions
generally exceed the Federal Deposit Insurance Corporation insurable limit. To date, the Company has not experienced any losses on its
deposits of cash. Cyngn invests in U.S. Treasury securities and carries these at amortized cost and recognizes gains and losses when
realized. |
| Concentration of Supplier Risk | Concentration of Supplier Risk The Company generally utilizes suppliers for
outside development and engineering support. The Company does not believe that there is any significant supplier concentration risk as
of September 30, 2023 and December 31, 2022. |
| Cash, Restricted Cash and Short-term Investments | Cash, Restricted Cash and Short-term Investments The Company considers its bank accounts and all
highly liquid investments that are both readily convertible to cash with minimal risk of changes in value due to changes in interest
rates, to be cash. As of September 30, 2023 and December 31, 2022, the Company had approximately $3.5 million and $10.5 million of cash,
respectively. The Company considers short-term investments to
include marketable U.S. government securities that it intends to hold until maturity and redeem within one year. The Company treated its
U.S. government treasury bill placements as held-to-maturity securities in accordance with the Financial Accounting Standards Board’s
(“FASB”) Accounting Standards Codification Topic (“ASC”) 320, “Investments – Debt and Equity Securities”,
and recorded these securities at amortized cost on the accompanying consolidated balance sheets as of September 30, 2023 and December
31, 2022. |
| Accounts Receivable | Accounts Receivable Accounts receivables are recorded at the invoiced
amount and do not bear interest. The Company provides for probable uncollectible amounts based upon its assessment of the current status
of the individual receivables and after using reasonable collection efforts. The allowance for doubtful accounts was zero as of September
30, 2023 and December 31, 2022. |
| Fair Value Measurements | Fair Value Measurements The accounting guidance under ASC Topic 820,
“Fair Value Measurement”, defines fair value, establishes a consistent framework for measuring fair value, and expands disclosure
for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined
as an exit price representing the amount that would be received to sell an asset or paid to transfer a liability (an exit price) in an
orderly transaction between market participants. As such, fair value is considered a market-based measurement that should be determined
based on assumptions that market participants would use in pricing an asset or liability. The Company uses the following fair value hierarchy
prescribed by U.S. GAAP, which prioritizes the inputs used to measure fair value as follows: Level 1 Level 2 Level 3 Assets and liabilities are considered to be fair
valued on a recurring basis if fair value is measured regularly. However, if the fair value measurement of an instrument does not necessarily
result in a change in the amount recorded on the consolidated balance sheets, assets and liabilities are considered to be fair valued
on a nonrecurring basis. This typically occurs when accounting guidance requires assets and liabilities to be recorded at the lower of
cost or fair value, or on certain nonfinancial assets and liabilities. Nonfinancial assets and liabilities that are measured at fair value
on a nonrecurring basis include certain long-lived assets, intangible assets, and share-based compensation measured at fair value upon
initial recognition. The carrying amounts of the Company’s cash
and accounts payable are reasonable estimates of their fair values due to their short-term nature. The fair values of the Company’s
share-based compensation and underwriter warrants were based on observable inputs and assumptions used in Black-Scholes valuation models
derived from independent external valuations. |
| Property and Equipment | Property and Equipment Property and equipment is stated at cost less
accumulated depreciation and amortization. Construction work in progress includes production costs and costs of materials used in the
development of the Company’s autonomous driving software. Assets are held as construction work in progress until placed into service,
at which date depreciation commences over the estimated useful lives of the respective assets. Depreciation is recorded on a straight-line
basis over each asset’s estimated useful life. Repair and maintenance costs are expensed as incurred.
Property and Equipment Useful life
Internal-use software 3 to 5 years
Computer and equipment 5 years
Furniture and fixtures 7 years
Leasehold improvements Shorter of 3 years or lease term
Automobile 5 years |
| Leases | Leases The Company accounts for leases in accordance
with ASC Topic 842 (“ASC 842”), “Leases”. All contracts are evaluated to determine whether or not they represent
a lease. A lease conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Leases
are classified as finance or operating in accordance with the guidance in ASC 842. The Company does not hold any finance leases. The Company
recognized a “right-of-use” asset and lease liability in the consolidated balance sheets under ASC 842 on the office space
lease that was amended and renewed in June 2023. On a prospective basis, lease expense will be recognized on a straight-line basis over
the remaining term of the lease. Operating leases are recognized on the balance sheet as right-of-use assets, and operating lease liabilities. |
| Costs to Develop Software | Costs to Develop Software The Company incurs costs related to software internally developed.
Based on the nature of the software the Company capitalizes software costs under the following guidance. |
| Internal-Use Software costs | Internal-Use Software costs The Company determined when to capitalize its
internal-use software after planning and design efforts are successfully completed. Management has implicitly authorized funding and the
software is expected to be completed and used as intended. The Company determines the amount of internal software costs to be capitalized
based on the amount of time spent by the developers on projects in the application stage of development. There is judgment involved in
estimating time allocated to a particular project in the application stage. Costs associated with building or significantly enhancing
the internally built software platform for internal use is capitalized, while costs associated with planning new developments and maintaining
the internally built software platforms are expensed as incurred. Capitalized costs include certain payroll and stock compensation costs,
as well as subscription server and consulting costs. Internal-use software is classified as property
and equipment and is amortized on a straight-line basis over their estimated useful life of three to five years. There is judgment involved
in the determination of the useful life. Amortization of the software asset will begin when the software is substantially complete and
ready for its intended use. No amortization has begun for the internal use software, as the projects are still in the application development
phase. Management evaluates the useful lives of these assets on a quarterly basis and tests for impairment whenever events or changes
in circumstances occur that could impact the recoverability of these assets. |
| Costs to develop software to be sold, leased or otherwise marketed | Costs to develop software to be sold, leased
or otherwise marketed The Company accounts for research costs of computer
software to be sold, leased or otherwise marketed as expense until technological feasibility has been established for the product.
Once technological feasibility is established, certain payroll and stock compensation, occupancy, and professional service costs that
are incurred to develop functionality for the Company’s software and internally built software platforms, as well as certain upgrades
and enhancements that are expected to result in enhanced functionality are capitalized. Judgment is required in determining when technological
feasibility of a product is established. The Company recognizes technological feasibility when a working model is complete. Amortization
will begin when the product or enhancement is available for general release to customers. Computer software to be sold, leased or otherwise
marketed is classified as an intangible asset. Capitalized software development costs are amortized using the greater of (a) the amount
computed using the ratio that current gross revenue for a product bear to total of current and anticipated future gross revenue for that
product or (b) the straight-line method, beginning upon commercial release of the product, and continuing over the remaining estimated
economic life of the product, not to exceed three years to five years and recorded as cost of revenue. No amortization has begun for externally
sold software, as the software enhancement is still in development. Management evaluates the useful lives of these assets on a quarterly
basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets.
No impairment charges were associated with the Company’s sold, leased or otherwise marketed software for the three and nine months
ended September 30, 2023. |
| Long-Lived Assets and Finite Lived Intangibles | Long-Lived Assets and Finite Lived Intangibles The Company has finite-lived intangible assets
consisting of patents and trademarks. These assets are amortized on a straight-line basis over their estimated remaining economic lives.
The patents and trademarks are amortized over 15 years. On April 1, 2022, the Company entered into an
agreement for exclusive rights to certain hardware and software products and the rights to subsequently sell the software products and
accompanying services. The Company paid a purchase price of $100,000 for these rights. The Company evaluated if substantially all of the
assets acquired are concentrated in a single identifiable asset or group of similar identifiable assets to determine if the transaction
should be accounted for as an asset acquisition. Since the only substantive assets acquired pertained to rights to intellectual property,
the entire purchase price was allocated to intellectual property and accounted for as intangible assets with a useful life of 15 years.
In accordance with ASC 805-50, “Business Combination”, the agreement was treated a s The Company reviews its long-lived assets and
finite-lived intangibles for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable.
The events and circumstances the Company monitors and considers include significant decreases in the market price of similar assets, significant
adverse changes to the extent and manner in which the asset is used, an adverse change in legal factors or business climate, an accumulation
of costs that exceed the estimated cost to acquire or develop a similar asset, and continuing losses that exceed forecasted costs. The
Company assesses the recoverability of these assets by comparing the carrying amount of such assets or asset group to the future undiscounted
cash flow it expects the assets or asset group to generate. The Company recognizes an impairment loss if the sum of the expected long-term
undiscounted cash flows that the long-lived asset is expected to generate is less than the carrying amount of the long-lived asset being
evaluated. An impairment charge would then be recognized equal to the amount by which the carrying amount exceeds the fair value of the
asset. No impairment charges were associated with the Company’s intangible assets for the three and nine months ended September
30, 2023 and 2022. |
| Income Taxes | Income Taxes The Company accounts for income taxes using the
asset and liability method, under which deferred tax assets and liabilities are recognized for the expected future tax consequences attributable
to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. A valuation allowance is provided when it is
more likely than not that some portion or all of a deferred tax asset will not be realized. Due to the Company’s lack of earnings
history, the net deferred tax assets have been fully offset by a valuation allowance as of September 30, 2023 and December 31, 2022 (see
Note 11. Income Taxes). There are no uncertain tax positions that
would require recognition in the consolidated financial statements. If the Company were to incur an income tax liability in the
future, interest on any income tax liability would be reported as interest expense and penalties on any income tax would be reported
as income taxes. Management’s conclusions regarding uncertain tax positions may be subject to review and adjustment at a later
date based upon ongoing analysis of or changes in tax laws, regulations and interpretations thereof as well as other factors. |
| Convertible Preferred Stock | Convertible Preferred Stock The Company has applied the guidance in ASC 480-10-S99-3A, SEC
Staff Announcement, “Classification and Measurement of Redeemable Securities”, and has classified all of its outstanding
convertible preferred shares as permanent equity. The Company records shares of convertible preferred stock at their respective issuance
price, net of issuance costs. The Company’s convertible preferred stock share’s redemption and conversion provisions are
not exclusively at the option of the holder and are contingent on certain deemed liquidation events within the Company’s control
(see Note 7. Capital Structure). |
| Warrants | Warrants The Company issued to its lead underwriter in
the Company’s IPO warrants to purchase up to 140,000 shares of the Company’s common stock. In addition, the Company issued
6,451,613 Common Warrants as a part of the private placement offering. The Company accounts for warrants in accordance with ASC 480, “Distinguishing
Liabilities from Equity”. The Company determined the fair value of the warrants using the Black-Scholes pricing model and
treated the warrants as equity instruments in consideration of the cashless settlement provisions in the warrant agreement. The Company also applied the guidance in ASC
340-10-S99-1, “Other Assets and Deferred Costs”, that states specific incremental costs directly attributable to a proposed
or actual offering of equity securities may properly be deferred and charged against the gross proceeds of the offering. The Company
treated the valuation of the warrants as directly attributable to the issuance of an equity contract and accordingly, classified the
warrants as additional paid-in capital. |
| Stock-based Compensation | Stock-based Compensation The Company recognizes the cost of share-based
awards granted to employees and directors based on the estimated grant-date fair value of the awards. Cost is recognized on a straight-line
basis over the service period, which is generally the vesting period of the award. The Company recognizes stock-based compensation cost
and reverses previously recognized costs for unvested awards in the period forfeitures occur. The Company determines the fair value of
stock options using the Black-Scholes option pricing model, which is impacted by the fair value of common stock, expected price volatility
of common stock, expected term, risk-free interest rates, and expected dividend yield (see Note 9. Stock-based Compensation Expense ) |
| Net Loss Per Share Attributable to Ordinary Shareholders | Net Loss Per Share Attributable to Ordinary Shareholders The Company computes loss per share attributable
to common shareholders by dividing net loss attributable to common shareholders by the weighted-average number of common shares outstanding.
Diluted net loss per share reflects the potential dilution that could occur if securities or other contracts to issue shares were exercised
into shares. In calculating diluted net loss per share, the numerator is adjusted for the change in the fair value of the shares (only
if dilutive) and the denominator is increased to include the number of potentially dilutive common shares assumed to be outstanding (see
Note 8. Net Loss per Share Attributable to Common Stockholders). |
| Research and Development Expense | Research and Development Expense Research and development expense consist primarily
of outsourced engineering services, internal engineering and development expenses, materials, labor and stock-based compensation of Company
personnel involved in the development of the Company’s products and services, and allocated lease costs based on the approximate
square footage area used in research and development activities. Research and development costs are expensed as incurred. |
| Selling, General, and Administrative Expense | Selling, General, and Administrative Expense Selling, general, and administrative expense
consist primarily of personnel costs, facilities expenses, depreciation and amortization, travel, and advertising costs. |
| Commitments | Commitments The Company recognizes a liability with regard
to loss contingencies when it believes it is probable a liability has occurred and the amount can be reasonably estimated. If some amount
within a range of loss appears at the time to be a better estimate than any other amount within the range, the Company accrues that amount.
When no amount within the range is a better estimate than any other amount the Company accrues the minimum amount in the range. There
have been no such liabilities recorded by the Company as of September 30, 2023 and December 31, 2022. |
| Segment Reporting | Segment Reporting The Company’s chief operating decision
maker, its Chief Executive Officer, manages operations and business as one operating segment for the purposes of allocating resources,
making operating decisions and evaluating financial performance. |
| Revenue Recognition | Revenue Recognition The Company enters into Non-Recurring Engineering
(“NRE”) contracts that are principally comprised of engineering services related to customer-specific configuration of the
DriveMod. Generally, with respect to these NRE contracts, i) the determination of the contract price is based on labor and hardware costs
estimated to achieve the required milestones specified in the contract; ii) payment under these arrangements are comprised of upfront
payments due upon execution of the agreements as well as payments due upon the achievement of milestones specified in each arrangement;
and iii) contain mutual termination clauses without penalty. The Company recognizes revenue from NRE contracts that are fully funded by
customers and the sale of its products when promised goods or services are transferred to customers. Each of the Company’s NRE arrangements
are comprised of multi-phase deliverables recognized at a point in time upon completion and acceptance from the customer of each phase
of the arrangement. For NRE contracts revenue, the Company recognizes
revenue in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services,
by following a five-step process which includes i) identify the contract with a customer; ii) identify the performance obligations in
the contract; iii) determine the transaction price; iv) allocate the transaction price to performance obligations in the contract and;
v) recognize revenue when or as the Company satisfies a performance obligation. Of the $1.4 million of revenue for the nine months
ended September 30, 2023, two domestic customers which are subsidiaries of global conglomerates represented 38.0% and 60.0% associated
with NRE contracts. There were no accounts receivable for these two customers at September 30, 2023 and December 31, 2022. All other revenue streams for the three and nine
months ended September 30, 2023 and 2022 are not material. |
| Cost of Revenue | Cost of Revenue Cost of revenue consists primarily of direct
labor and related fringe benefits for internal engineering resources, and deployment related travel costs incurred for the completion
of the contracts and hardware costs. |
| Recent Accounting Standards | Recent Accounting Standards In June 2016, the FASB issued Accounting Standards
Update (“ASU”) 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial
Instruments”, which provides new guidance regarding the measurement and recognition of credit loss impairment for certain financial
assets. The Company adopted this standard in the first quarter of 2023 and there was no impact on our consolidated financial statements
upon adoption. As a result of this standard, the Company utilizes current and historical collection data as well as assesses current economic
conditions in order to determine expected trade credit losses on a prospective basis. The adoption of this standard did not result
in any material impact to our allowance for doubtful accounts balance as of September 30, 2023. In addition, the Company evaluated their
debt securities for credit losses. Because the Company’s sole investments of held-to-maturity debt securities are short-term U.S.
Treasury bills, no provision for credit losses on such securities was deemed necessary. |
