Description of Business and Basis of Presentation	12 Months Ended
Description of Business and Basis of Presentation	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business Ouster, Inc. (the “Company”) was incorporated in the Cayman Islands on June 4, 2020 as “Colonnade Acquisition Corp.”. Following the closing of a business combination between the Company and Ouster Technologies, Inc. (formerly, Ouster, Inc.) in March 2021 (the “Colonnade Merger”), the Company domesticated as a Delaware corporation and changed its name to “Ouster, Inc.” References to “CLA” refer to the Company prior to the business combination. Ouster Technologies, Inc., the Company’s predecessor was founded on June 30, 2015. The Company is a leading provider of high-resolution digital lidar sensors that offer advanced 3D vision to machinery, vehicles, robots, and fixed infrastructure assets, allowing each to understand and visualize the surrounding world and ultimately enabling safe operation and ubiquitous autonomy. Basis of Presentation and Principles of Consolidation The consolidated financial statements include the accounts of the Company and its subsidiaries (all of which are wholly owned) and have been prepared in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). All intercompany balances and transactions have been eliminated in consolidation. Liquidity The Company’s principal sources of liquidity are its cash and cash equivalents, short-term investments, cash generated from sales of the Company’s products, sales of common stock under its at-the-market equity offering program and debt financing. The accompanying consolidated financial statements have been prepared on a going concern basis. The Company has experienced recurring losses from operations, and negative cash flows from operations. As of December 31, 2025, the Company’s existing sources of liquidity included cash and cash equivalents, restricted cash, and short-term investments of $211.2 million. The Company has incurred losses and negative cash flows from operations for several years. If the Company continues to incur losses in the future, it may need to improve liquidity and raise additional capital through the issuance of equity and/or debt. There can be no assurance that the Company would be able to raise such capital. However, management believes that the Company’s existing sources of liquidity are adequate to fund its operations for at least twelve months from the date the consolidated financial statements were available for issuance. At the Market Issuance Sales Agreement On April 29, 2022, the Company entered into an open market sale agreement with B. Riley Securities, Inc., Cantor Fitzgerald & Co. and Oppenheimer & Co. Inc. (the “Former ATM Agreement”), pursuant to which we could offer and sell shares of our common stock with an aggregate offering price of up to $150.0 million under an “at-the-market” offering program. During the years ended December 31, 2024 and 2023, the Company sold 6,045,428 and 2,878,875 shares, respectively under the Former ATM Agreement. The weighted-average sales price and gross proceeds to the Company before deducting offering costs, sales commissions and fees were approximately $9.64 and $5.67 per share and $58.3 million and $16.3 million, respectively, during the year ended December 31, 2024 and 2023. The Company used the net proceeds from the Former ATM Agreement for working capital and general corporate purposes. We terminated the Former ATM Agreement in April 2025 in anticipation of the scheduled expiration of our registration statement on Form S-3 (File No. 333-264600). The Company filed a new registration statement on Form S-3 on May 2, 2025 (File No. 333-286936), which was subsequently declared effective by the SEC. On May 12, 2025, the Company entered into an At the Market Issuance Sales Agreement (the “ATM Agreement”) with Oppenheimer & Co. Inc., pursuant to which the Company may offer and sell, from time to time, through or to the agent, acting as agent or principal, having an aggregate offering price of up to $100.0 million. During the year ended December 31, 2025, we sold 4,671,406 shares at a weighted-average sales price of $20.88 per share, resulting in cumulative gross proceeds to us totaling approximately $95.6 million before deducting offering costs, sales commissions and fees. Cumulative net proceeds to us totaled approximately $97.5 million after deducting offering costs, sales commissions and fees. The remaining availability under the ATM Agreement as of December 31, 2025 is approximately $2.5 million.