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Sonnet 5.5 scores 56 on the Artificial Analysis index

development2026-09-29benchmarks

Claim

The issue reports Sonnet 5.5 scoring 56 on the Artificial Analysis index, behind Opus 5.5 and ahead of GPT-6 Astra.

Reported metric: 56

Reporting date: 2026-09-29 (not necessarily the event date)

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

Welcome to September 29, 2026 (theinnermostloop.substack.com)
Source linked by the September 29 issue (x.com)

Indexed from the September 29 newsletter. Linked-source claims have not been independently verified.

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Welcome to September 29, 2026

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Welcome to September 29, 2026

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Sonnet 5.5 scores 56 on the Artificial Analysis index
Innermost Loop KB — secondary record
Reporting date: 2026-09-29
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-09-29-sonnet-index
Claim: The issue reports Sonnet 5.5 scoring 56 on the Artificial Analysis index, behind Opus 5.5 and ahead of GPT-6 Astra.
Attributed sources:
- Welcome to September 29, 2026 — https://theinnermostloop.substack.com/p/welcome-to-september-29-2026
- Source linked by the September 29 issue — https://x.com/synthwavedd/status/2104635213200376021
This citation does not imply independent verification of linked-source claims.

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