This release includes 1 breaking change for platform teams planning a safe upgrade.
✓ No known CVEs patched in this version
Topics
+14 more
Summary
AI summaryPriority‑1 tasks now route to Opus instead of Sonnet.
Full changelog
Cross-adapter failover and model routing improvements.
- Cascade fallback with capability gating for cross-adapter failover
- Priority-1 tasks now route to Opus (was Sonnet)
Breaking Changes
- Changed default task router for Priority‑1 tasks from Sonnet to Opus
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About chernistry/bernstein
Deterministic multi-agent orchestrator for 18 CLI coding agents (Claude Code, Codex, Cursor, Aider, Gemini CLI, OpenAI Agents SDK, and more). MCP server mode (stdio + HTTP/SSE) exposes the orchestrator to any MCP client. Git worktree isolation per agent, HMAC-chained audit trail, cost-aware model routing via contextual bandit. ~11K monthly PyPI downloads, Apache 2.0.
Related context
Related tools
Earlier breaking changes
- v3.7.1 `bernstein approve` and `bernstein reject` now enforce identifier regex `[A-Za-z0-9._-]{1,64}`.
- v3.7.1 Tampered mission ledger reports as unverified rather than not-found.
- v3.7.1 `mission define` now refuses phases without gate tasks.
- v3.5.0 MCP client, transport, and gateway become stateless; calls carry content‑derived trace IDs in _meta.
Beta — feedback welcome: [email protected]