Development

A benchmark record is beaten under thirty minutes later

development2026-02-06

Claim

Claude Opus 4.6 took the Terminal Bench 2.0 record at 65.4% and was beaten by GPT-5.3-Codex at 77.3% less than thirty minutes later.

Reported metric: 65.4% → 77.3%

Reporting date: 2026-02-06 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to February 6, 2026 (theinnermostloop.substack.com)

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About

Terminal Bench 2.0

Reported in

Welcome to February 6, 2026

Actor

Evidence for

Supersedes

The measured autonomy horizon reaches 6.6 hours

Referenced by

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Citation formatCitation text

A benchmark record is beaten under thirty minutes later
Innermost Loop KB — secondary record
Reporting date: 2026-02-06
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-02-06-record-falls-in-thirty-minutes
Claim: Claude Opus 4.6 took the Terminal Bench 2.0 record at 65.4% and was beaten by GPT-5.3-Codex at 77.3% less than thirty minutes later.
Attributed sources:
- Welcome to February 6, 2026 — https://theinnermostloop.substack.com/p/welcome-to-february-6-2026
This citation does not imply independent verification of linked-source claims.

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