# OB-1 — AI Coding Tool Review & Pricing

> OB-1 is an open-source, terminal-first coding agent that features persistent, inspectable project memory and a self-correcting test-passing loop. It uses multi-agent orchestration modes and built-in model routing to automate development tasks while allowing users to choose between free local/cloud models or hosted frontier services.

Source: https://ai.dosa.dev/tools/ob-1 · Updated Oct 15, 2026 · Category: Terminal & CLI Agents · Published by dosa.dev

## At a glance

- **Tool**: OB-1
- **Company**: Overbrilliant
- **Category**: [Terminal & CLI Agents](https://ai.dosa.dev/category/cli-agents)
- **Pricing model**: Freemium
- **Official website**: https://github.com/Overbrilliant/ob-1

## Key features

- Embedded free-models router with no account required
- Persistent project memory stored in a local SQLite graph
- Self-correcting loop that runs project checks after file edits
- Multi-agent modes including Solo, Fusion best-of-N, and refute-review
- Support for custom endpoints and local models via OpenAI-compatible APIs

## Pricing

**Model**: Freemium

OB-1 offers a free tier that functions without accounts or API keys using an embedded free-models router. Paid tiers provide hosted frontier models via prepaid, hard-capped credits starting at $9 per month, which never incur overage charges.

## Who it is for

- **Best for**: Developers who prefer terminal-based workflows and require durable, inspectable project memory with a hard-capped, predictable spending model.
- **Not ideal for**: Users who prefer a fully integrated graphical IDE experience with native inline tab completion, or those who require complex enterprise role-based access controls.

## Verdict

OB-1 is a highly capable, privacy-conscious terminal agent that stands out for its unique 'no-account' setup and its commitment to transparent, hard-capped billing, making it an excellent choice for users who want to avoid surprise costs.

## Recent updates

Version 0.3.7 introduced background refreshing for the free-model catalog and clarified access timing for new free models. Previous updates integrated the Auto execution mode, unified the Fusion orchestration path, and added in-session authentication commands.

## Frequently asked questions

### Is OB-1 free?

OB-1 is Freemium. OB-1 offers a free tier that functions without accounts or API keys using an embedded free-models router. Paid tiers provide hosted frontier models via prepaid, hard-capped credits starting at $9 per month, which never incur overage charges. Check the official site for current plans.

### Is OB-1 open source?

Yes - OB-1 is open source. OB-1 offers a free tier that functions without accounts or API keys using an embedded free-models router. Paid tiers provide hosted frontier models via prepaid, hard-capped credits starting at $9 per month, which never incur overage charges.

### How much does OB-1 cost?

OB-1 offers a free tier that functions without accounts or API keys using an embedded free-models router. Paid tiers provide hosted frontier models via prepaid, hard-capped credits starting at $9 per month, which never incur overage charges. Pricing changes often - verify on the official site.

### Who is OB-1 best for?

Developers who prefer terminal-based workflows and require durable, inspectable project memory with a hard-capped, predictable spending model.

### Who is OB-1 not ideal for?

Users who prefer a fully integrated graphical IDE experience with native inline tab completion, or those who require complex enterprise role-based access controls.

### What are the best OB-1 alternatives?

The closest OB-1 alternatives on ai.dosa.dev are Claude Code, Codex CLI, Amp - all listed under Terminal & CLI Agents.

### Who makes OB-1?

OB-1 is developed by Overbrilliant. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.

## Top alternatives

- [Claude Code](https://ai.dosa.dev/tools/claude-code) (Freemium) — Solo founders, indie hackers, and developers working in real-world codebases who need help with complex, multi-file engineering tasks like refactoring and bug fixing.
- [Codex CLI](https://ai.dosa.dev/tools/codex-cli) (Freemium) — Developers needing a terminal-integrated agent for coding tasks, local repository refactoring, automated testing, and code reviews.
- [Amp](https://ai.dosa.dev/tools/amp) (Freemium) — Developers who need autonomous agents to handle long-running tasks, code reviews, testing, and complex multi-step feature implementation across different environments.
- [Aider](https://ai.dosa.dev/tools/aider) (Open Source) — Developers comfortable with command-line workflows who want full control over model selection, git-centric history, and cost-efficient coding without subscription markups.
- [Gemini CLI](https://ai.dosa.dev/tools/gemini-cli) (Freemium) — Developers who need AI-powered coding assistance, terminal-based automation, and direct control over their workflow within their local shell.
- [Goose](https://ai.dosa.dev/tools/goose) (Free) — Developers and teams who require a vendor-neutral, highly extensible agent platform that supports local execution and complex, multi-step workflow automation.
- Full alternatives guide: https://ai.dosa.dev/tools/ob-1/alternatives