Changelog

For the full changelog, see CHANGELOG.md on GitHub.

v1.0.0 (2026-05-11)

All 5 Phases Complete

• Phase 1: Core runtime (@handler, Prompt, Model, Provider, Config, CLI)
• Phase 2: State & Chains (Session, DynamoDB, Chain, Streaming)
• Phase 3: Agents & Tools (Tool, Agent, Router, Sandbox, Async)
• Phase 4: Cost & Observability (Tracer, Metrics, CostTracker, A/B, Analytics)
• Phase 5: DX & Deployment (Deploy, Eject, Canary, Testing, Golden datasets)

Stats

• 42 commits
• 7,100+ lines of source code
• 116 tests passing
• Published to PyPI: pip install substrai-lambdallm