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Claude · GPT-5 · Comparison

Claude Opus 5 vs GPT-5.6 Sol

The 11 Aug 2026 Artificial Analysis snapshot — the file we ingest into /leaderboard — has Anthropic in the first four slots. OpenAI's first row is GPT-5.6 Sol (max) at rank 5.

Rank Model Company Score
1 Claude Opus 5 (Adaptive Reasoning, Max Effort) Anthropic 63.1
2 Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) Anthropic 62.5
3 Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) Anthropic 62.1
4 Claude Opus 5 (Adaptive Reasoning, High Effort) Anthropic 61.5
5 GPT-5.6 Sol (max) OpenAI 60.9

An earlier version of this page had Sol at #4 with a score of 59. That was a previous snapshot. The table above matches content/leaderboard_data.json dated 11 Aug 2026.

How to read it

Opus 5 Max Effort still leads the general intelligence index. Sol (max) is 2.2 points back. Sol (xhigh) is rank 7 at 59. We don't run these evals. Artificial Analysis does.

Pick from the board, not from a vibe:

  • Mixed research, coding, and writing: start with Opus 5 Max Effort.
  • Already on Sol: this snapshot does not show it overtaking Opus on the index.
  • Price: this file has no list rates. Check the vendor. We don't invent $/MTok here.

What we don't claim

If a number isn't on /leaderboard or in this table, it doesn't belong in the verdict. When the edition stamp moves, re-check the live board. How we ingest: /methodology.