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Claude Opus 4.5 20251101 Thinking 64K High Effort benchmarks, ranks and price

Where Artificial Analysis, LiveBench, LMArena and Berkeley BFCL place Claude Opus 4.5 20251101 Thinking 64K High Effort, what it costs through OpenRouter and Vercel AI Gateway, and the models either side of it on the consensus.

Updated Oct 1, 2026Full leaderboardSources and method

Read Oct 1, 2026

#15of 85

on the LLM leaderboard, with a consensus score of 68 across 3 leaderboards.

Source: Artificial Analysis, LiveBench, LMArena and Berkeley BFCL, combined by Rank.ai.

By leaderboard

Where each leaderboard places Claude Opus 4.5 20251101 Thinking 64K High Effort

Artificial Analysis

Not measured by Artificial Analysis.

Intelligence Index: a composite of reasoning, knowledge, maths and coding evaluations.

LiveBench

#21of 34

Score 72.6. Best run: Claude Opus 4.5 20251101 Thinking 64K High Effort.

Contamination-limited questions refreshed each release: reasoning, maths, coding, data analysis, language.

LMArena

#15of 79

Score 1473. Best run: claude-opus-4-5-20251101-thinking-32k.

Blind head-to-head human votes, style controlled.

Berkeley BFCL

#1of 37

Score 77.47%. Best run: Claude-Opus-4-5-20251101 (FC).

Function calling and tool use, single turn to multi turn and web search.

Price and context

$10

Vercel AI Gateway: $5.00 in, $25 out LiveBench cost per solved task $0.610.

Nearby

The models either side of Claude Opus 4.5 20251101 Thinking 64K High Effort

  1. #12Grok 4.572
  2. #13Claude Sonnet 569
  3. #14Claude Opus 4.6 Thinking High Effort69
  4. #15Claude Opus 4.5 20251101 Thinking 64K High Effort68
  5. #16Gemini 3.5 Flash67
  6. #17Gemini 3.6 Flash67
  7. #18GPT-5.6 Terra66

Questions about Claude Opus 4.5 20251101 Thinking 64K High Effort

How good is Claude Opus 4.5 20251101 Thinking 64K High Effort?
Claude Opus 4.5 20251101 Thinking 64K High Effort ranks #15 of 85 models on the Rank.ai LLM leaderboard, with a consensus score of 68 out of 100 across 3 leaderboards.
Is Claude Opus 4.5 20251101 Thinking 64K High Effort better than Claude Opus 4.6 Thinking High Effort?
Not on the consensus: Claude Opus 4.6 Thinking High Effort scores 69 to Claude Opus 4.5 20251101 Thinking 64K High Effort's 68. Compare them source by source below, since the leaderboards test different things.
Is Claude Opus 4.5 20251101 Thinking 64K High Effort better than Gemini 3.5 Flash?
On the consensus, yes: 68 to 67.
How much does Claude Opus 4.5 20251101 Thinking 64K High Effort cost?
$5.00 per million input tokens and $25 per million output tokens on Vercel AI Gateway, the cheaper listing we read. Blended at three input tokens to one output, that is $10 per million.

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Enter your website. In about two minutes, Rank.ai asks ChatGPT, Claude and Gemini 12 questions your customers ask and grades how often they name you.

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  • The pages AI readsThe sources behind each answer.
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