Artificial Analysis revamp: Terra fifth, ahead of Gemini 4 Argon
A long post breaks down Artificial Analysis's new Intelligence Index: Opus 5.5 leads, Terra places fifth at 51 and beats Gemini 4 Argon and Fable 5.1 at $0.96 per task.
GPT-6.1 Terra just ranked ABOVE Claude Fable 5.1, while costing almost 14x less per benchmark task! Artificial Analysis has completely overhauled its Intelligence Index, and the results are wild! Opus 5.5 still leads with 58, but Astra is just ONE point behind at 57! Sol follows with 55, Sonnet 5.5 with 54, and somehow Terra takes fifth place with 51, beating Gemini 4 Argon and Fable 5.1 My first reaction? These rankings must be broken!!! But the more I looked into the new benchmarks, the more sense everything made! Opus is still incredibly strong at coding, but Astra is much more competitive in other areas than its previous ranking suggested. And Muse Wonder Full dropping to 50 after all the hype? Honestly, not that surprising! The real shock is Terra. It managed 42% on the new FrontierCode 2.0, matching Astra and Sonnet 5.5! The new index puts much more emphasis on practical coding, research and agentic tasks, which could explain why Terra beats Fable! And here’s the funniest part: Terra costs $0.96 per Intelligence Index task, while Fable costs $13.04 Maybe the rankings aren’t broken after all. Maybe some of our assumptions about these models are!
This post quotes another post: “Artificial Analysis Intelligence Index v5: Claude Opus 5.5 leads, GPT-6 Astra second”