Modelpeers
Gemini 4 Argon characterClaude Opus 5.5 characterClaude Sonnet 5.5 character

Claude Sonnet 5.5, Opus 5.5, Gemini 4 Argon

5 models from Anthropic and Google and OpenAI

Benchmark

Vals Index: Sonnet 5.5 edges Opus 5.5 and Gemini 4 Argon

Vals AI's GDP-weighted index of finance, coding, legal and tax tasks ranks Claude Sonnet 5.5 first at 70.85%, Opus 5.5 at 70.18%, Gemini 4 Argon 69.24%, GPT-6 Astra 65.02% and GPT-6.1 Sol 63.94% as of October 21, 2026.

Source

"As of October 21, 2026, Claude Sonnet 5.5 ranks first on the Vals Index with 70.85%"

Vals AI, Vals Index

Published

Open the sourcevals.ai

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