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Stockholders' Equity - Narrative (Details) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
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Jul. 17, 2024 USD ($) $ / shares shares | Mar. 22, 2024 USD ($) | Mar. 21, 2024 USD ($) shares $ / shares | Feb. 29, 2024 USD ($) shares | Dec. 31, 2025 vote $ / shares shares | Dec. 31, 2024 USD ($) $ / shares shares | Apr. 04, 2025 USD ($) | Mar. 20, 2024 USD ($) $ / shares shares | Dec. 31, 2023 shares | Dec. 31, 2021 $ / shares shares | Oct. 31, 2020 $ / shares
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Temporary equity, shares authorized (in shares) |  |  |  |  |  |  |  | 53,761,506 |  |  |
Temporary equity, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 0.001 |  |  |
Common stock, issued (in shares) |  |  |  |  | 31,344,782 | 27,531,490 |  |  |  |  |
Common stock, outstanding (in shares) |  |  |  |  | 31,344,782 | 27,518,439 |  |  |  |  |
Issuance of common stock to Graphite stockholders as a result of the Merger (in shares) |  |  | 8,320,485 |  |  |  |  |  |  |  |
Sale of stock, number of shares issued (in shares) |  |  | 15,409,102 |  |  |  |  |  |  |  |
Sale of stock, consideration received | $ |  |  | $ 53,500,000 |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  | $ 0.00001 | $ 0.00001 |  |  |  |  |
Vote per share of common stock | vote |  |  |  |  | 1 |  |  |  |  |  |
Series A preferred stock warrants converted (in shares) |  |  | 164,676 |  |  |  |  |  |  |  |
Reclassification of warrant liability to equity | $ |  | $ 1,900,000 |  |  |  | $ 1,918,000 |  |  |  |  |
Exercise of stock warrants (in shares) |  |  |  |  | 554 | 0 |  |  |  |  |
December 2020 Warrants |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrants exercised, number of shares (in shares) |  |  |  | 470,000 |  |  |  |  |  | 470,000 |
Proceeds from warrant exercises | $ |  |  |  | $ 100,000 |  |  |  |  |  |  |
Warrants exchanged at closing of Merger (in shares) |  |  | 95,034 |  |  |  |  |  |  |  |
Common stock warrants outstanding |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ / shares |  |  | $ 10.64 |  |  |  |  |  |  |  |
PIPE Financing |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued (in shares) | 1,578,947 |  | 3,559,565 |  |  |  |  |  |  |  |
Sale of stock, consideration received | $ | $ 30,000,000.0 |  | $ 53,500,000 |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.00001 |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares | $ 19.00 |  |  |  |  |  |  |  |  |  |
Sales Agreement |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued (in shares) |  |  |  |  | 3,618,634 |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares |  |  |  |  | $ 41.45 |  |  |  |  |  |
Aggregate sale proceeds receivable | $ |  |  |  |  |  |  | $ 150,000,000.0 |  |  |  |
LENZ OpCo Preferred Stock Exchanged for Graphite Common Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares issued, conversion of convertible preferred stock (in shares) |  |  | 10,705,829 |  |  |  |  |  |  |  |
Class B Convertible Common Stock Exchanged for Graphite Common Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares issued, conversion of convertible preferred stock (in shares) |  |  | 554,843 |  |  |  |  |  |  |  |
Series A Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Temporary equity, shares issued (in shares) |  |  |  |  |  |  |  | 21,977,282 |  |  |
Temporary equity, shares outstanding (in shares) |  |  |  |  | 0 | 0 |  | 21,977,282 | 21,977,282 |  |
Liquidation preference | $ |  |  |  |  |  |  |  | $ 47,300,000 |  |  |
Liquidation preference per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 2.15 |  |  |
Conversion of convertible preferred stock (in shares) |  |  |  |  |  | 21,977,282 |  |  |  |  |
Series A-1 Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Temporary equity, shares issued (in shares) |  |  |  |  |  |  |  | 2,950,548 |  |  |
Temporary equity, shares outstanding (in shares) |  |  |  |  | 0 | 0 |  | 2,950,548 | 2,950,548 |  |
Liquidation preference | $ |  |  |  |  |  |  |  | $ 10,000,000.0 |  |  |
Liquidation preference per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 3.3892 |  |  |
Conversion of convertible preferred stock (in shares) |  |  |  |  |  | 2,950,548 |  |  |  |  |
Series B Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Temporary equity, shares issued (in shares) |  |  |  |  |  |  |  | 28,019,181 |  |  |
Temporary equity, shares outstanding (in shares) |  |  |  |  |  |  |  | 28,019,181 |  |  |
Liquidation preference | $ |  |  |  |  |  |  |  | $ 83,500,000 |  |  |
Liquidation preference per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 2.9801 |  |  |
Convertible Preferred Stock | LENZ OpCo Preferred Stock Exchanged for Graphite Common Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Conversion of convertible preferred stock (in shares) |  |  | 52,947,011 |  |  |  |  |  |  |  |
Class A Common Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, issued (in shares) |  |  | 11,838,624 |  |  |  |  | 11,838,624 |  |  |
Common stock, outstanding (in shares) |  |  | 11,668,867 |  |  |  |  | 11,668,867 |  |  |
Class A Common Stock | December 2020 Warrants |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.21 |
Convertible Common Stock Class B |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Temporary equity, shares issued (in shares) |  |  |  |  |  |  |  | 2,744,184 |  |  |
Temporary equity, shares outstanding (in shares) |  |  |  |  |  |  |  | 2,744,184 |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, issued (in shares) |  |  | 2,393,729 |  |  |  |  |  |  |  |
Common stock, outstanding (in shares) |  |  | 2,359,408 |  |  |  |  |  |  |  |
Series A Preferred Stock | October 2020 Warrants |  |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 2.15

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- Definition The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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