Magnitude
The best coding agent for open models

Magnitude is a terminal-based coding agent optimized for open language models, designed to match the performance of leading proprietary coding agents at significantly lower token costs. It provides a curated model stack with custom infrastructure including constrained decoding, a robust streaming parser, and harness reliability to fix common open model failure modes. Users get a single API key, built-in web search, and zero data retention on their code and prompts.
Magnitude wraps open models with constrained decoding, speculative execution with rollback, and mid-stream schema validation to ensure reliable, high-quality coding agent behavior via a CLI tool.
Software developers who want a high-performance coding agent using open models
Background.
- Status
- launched
- Business model
- freemium
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