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chore(release): v1.3.0 — Terminal-Bench 2.1 result + Opus 5 - #765

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Jul 29, 2026
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chore(release): v1.3.0 — Terminal-Bench 2.1 result + Opus 5#765
ericleepi314 merged 1 commit into
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release/v1.3.0

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Release v1.3.0

Version bump + Terminal-Bench 2.1 achievement announcement.

Version (all spots → 1.3.0)

pyproject.toml, src/__init__.py, install.sh (INSTALLER_VERSION, was stale at 1.1.0), ui-tui/src/gatewayClient.ts (CLAWCODEX_VERSION, was stale at 1.1.0), uv.lock.

Terminal-Bench 2.1 result

Running headless on claude-opus-5 at effort=xhigh, ClawCodex solved 72 of 89 tasks — 80.9% pass@1 on a single run (k=1). On the public 2.1 leaderboard (k=5 averages) that would slot around third — behind Claude Code / Fable 5 (83.8%) and Codex / GPT-5.5 (83.1%), and ahead of Claude Code on Opus 4.8 (78.9%) and Sonnet 5 (74.6%). Benchmarked on main at #756 (before this tag). Run artifacts: eval/harbor/jobs/tb21-clawcodex-3.

Docs

Every benchmark claim was independently re-derived from the result.json files and cross-checked against the live leaderboard; the write-up is deliberately conservative about the k=1-vs-k=5 comparison, timeouts, and the model/harness confound.

🤖 Generated with Claude Code

Bump version to 1.3.0 across pyproject.toml, src/__init__.py, install.sh,
ui-tui/src/gatewayClient.ts, and uv.lock. Add the [1.3.0] CHANGELOG section
and a news item announcing 80.9% pass@1 (72/89) on Terminal-Bench 2.1 with
claude-opus-5 — a single-run (k=1) result that would slot around third on
the public leaderboard, ahead of Claude Code on Opus 4.8. Sync README /
NEWS archive / ZH README to the top-10 news window.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
@ericleepi314
ericleepi314 merged commit bd3339f into main Jul 29, 2026
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ericleepi314 deleted the release/v1.3.0 branch July 29, 2026 07:19
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