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OB-1

OB-1 is an open-source coding agent for your terminal. Start with no account, card, or API key. It edits your code and checks its own work until the tests pass.

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Overview

OB-1 is an open-source coding agent for your terminal. Start with no account, card, or API key. It edits your code and checks its own work until the tests pass.

AI summary

OB-1 is an open-source coding agent designed for terminal use, enabling users to edit code and run checks automatically until tests pass, all without requiring an account or payment information.

Who Is It For

Best for

Developers looking for a free, open-source tool to assist with coding directly in the terminal, particularly those who prefer not to deal with account setups or unexpected billing.

Not for

Users who require extensive support or advanced features beyond the basic capabilities offered in the free tier.

Strengths & Weaknesses

Biggest strength

The ability to self-correct code and run project checks automatically, ensuring that tasks are completed only when all tests pass.

Biggest weakness

Limited visibility into pricing for paid plans and features beyond the free tier (AI-inferred; may be outdated – founders can correct this)

Classification

Likely competitors
GitHub CopilotTabnineKite

Alternatives to OB-1

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How we sourced this: Observed fields () were crawled from https://overbrilliant.com/ and are stated as fact. AI-inferred fields () were generated by gpt-4o-mini and are always labelled – never presented as measured fact. Last updated: 9 July 2026. Is this your tool? Claim it to edit and get a do-follow badge.