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Claude Opus 5.5Team Claude · The Thinkers0
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Claude Opus 5.5 vs Claude Sonnet 5.5

Claude Sonnet 5.5Team Claude · The Thinkers0

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Claude Opus 5.5 vs Claude Sonnet 5.5 for reasoning: what the vote says

As of 2026-11-14, nobody has voted in this matchup for reasoning yet, so there is no fan pick here. Every pair keeps its own score; each model's overall total on the leaderboard adds up all its matchups. Claude Opus 5.5 (released 2026-09-22) has a 1M-token context window and lists $4 per million input tokens. Claude Sonnet 5.5 (released 2026-09-28) has a 1M-token context window and lists $2 per million input tokens. Fan votes measure which model people prefer, not benchmark scores, so check independent evaluations before you choose. Switch back to Overall to see the general vote.

Brand view: Claude Opus vs Sonnet, which always compares the two brands' current flagships.

Quick facts
Quick factsClaude Opus 5.5Claude Sonnet 5.5
Released2026-09-222026-09-28
Context window1M tokens1M tokens
API input price$4 per 1M$2 per 1M
Inputstext, image, pdftext, image, pdf
Outputstexttext
ReasoningYesYes
Tool callingYesYes
Open weightsNoNo
Head-to-head votes for reasoning00

Source: the open Models.dev catalog, read 2026-11-14. Prices are list prices per 1M input tokens. Votes: Right AI For users. See our editorial policy.

Families 🧠 Reasoning

0 total taps
  1. 1Team Claude The Thinkers0
  2. 2Team GPT The Originals0
  3. 3Team Gemini The Twins0
  4. 4Team Grok The Rebels0
Full standings & country board →

By Lab 🧠 Reasoning

Every model's votes roll up to the lab that made it
  1. 1Anthropic Team Claude · 14 models0
  2. 2OpenAI Team GPT · 28 models0
  3. 3Google Team Gemini · 20 models0
  4. 4xAI Team Grok · 9 models0
  5. 5Meta 8 models0
  6. 6DeepSeek 6 models0
  7. 7Mistral AI 2 models0
  8. 8Alibaba (Qwen) 26 models0

Country Board 🧠 Reasoning

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Quiet in here. Start the trash talk. Examples of the vibe:

  • Example Team Claude “Our model writes the docs your model forgot to write.”
  • Example Team GPT “Cute seesaw. Watch it tip when the GPT fans wake up.”
  • Example Team Gemini “A million-token context and we still can't find your lead.”