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Reverse Merger - Schedule of Merger and After Redemptions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Cash – GAMC trust and cash (net of redemption) (in Dollars) | $ 567 |
Cash – PIPE Financing (in Dollars) | 4,701 |
Total gross proceeds (in Dollars) | $ 5,268 |
Common stock - GAMC common stock | 7,273,159 |
Common stock - upon issuance to vendor for services rendered related to the Merger | 25,000 |
The Merger and PIPE shares | 8,393,279 |
Common stock - Legacy Bolt | 3,335,864 |
Total shares of the Company’s Common stock outstanding immediately after the Merger | 34,284,298 | 3,335,864
Golden Arrow Merger Corp. (“GAMC”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Less: redemption of GAMC common stock | (492,278) |
Common stock - upon of settlement of GAMC liability for underwriting commission | 625,000 |
Total shares of the Company’s Common stock outstanding immediately after the Merger | 32,315,550 |
Bolt Threads, Inc. (“Legacy Bolt”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock - upon of settlement of Legacy Bolt liability for contract termination | 750,000 |
Bolt Threads, Inc. (“Legacy Bolt”) [Member] | Convertible Notes [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock - net exercise of Legacy Bolt Bridge Warrants | 10,451,111 |
Bolt Threads, Inc. (“Legacy Bolt”) [Member] | Bridge Warrant [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock - net exercise of Legacy Bolt Bridge Warrants | 1,336,723 |
Class A Common Stock [Member] | Golden Arrow Merger Corp. (“GAMC”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock, shares outstanding | 7,047,500 |
Class B Common Stock [Member] | Golden Arrow Merger Corp. (“GAMC”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock, shares outstanding | 140,000 |
Class A Redeemable Common Stock [Member] | Golden Arrow Merger Corp. (“GAMC”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Common stock, shares outstanding | 577,937 |
Convertible Preferred Stock [Member] | Bolt Threads, Inc. (“Legacy Bolt”) [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Shares issued in PIPE Financing | 8,048,573 |
PIPE Financing [Member] |  |
Reverse Merger - Schedule of Merger and After Redemptions (Details) [Line Items] |  |
Shares issued in PIPE Financing | 470,120 |

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