Bismuth

Bismuth is an AI-powered autonomous developer agent for engineering teams that need help reducing backlog, catching regressions, and shipping safer changes across existing codebases.

Key capabilities include:

• Regression-tested pull requests for bugs and features, turning Jira/Linear tickets or GitHub issues into PRs that run tests, fuzzing, and static analysis
• Codebase scanning to surface logic and security bugs before production
• PR reviews that focus on high-signal findings, commenting when it matters (logic or security issues)
• Workflow integrations with GitHub, GitLab, Bitbucket, Jira, Linear, and GitHub Issues, plus an SDK (Python/TypeScript) for repository search and generating/applying diffs in custom tooling

Pricing: Freemium with tiers including Free (first month), Starter $15/month, Growth $50/month, Team $150/month, plus Enterprise with volume pricing and options like SSO, compliance, and deployment in a customer cloud.

Notable for its emphasis on safe, high-confidence changes using custom code-graph search plus LLM-driven fuzzing/analysis, and for publishing the SM-100 software maintenance benchmark for evaluating agent bug-finding and maintenance performance.