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Claude Opus 4.5 Thinking

AnthropicCurrentReleased November 2025
Overall Score
Unranked
Arena Elo
N/A
Categories Ranked
0of 8
Price (1M tokens)
N/A
Speed
N/A
Context
200K
ProprietaryReasoning
Confidence
reasoning

BenchLM is tracking Claude Opus 4.5 Thinking, but this profile is currently excluded from the public leaderboard because it still lacks enough non-generated benchmark coverage to rank safely. Only non-generated public benchmark rows appear below.

Claude Opus 4.5 Thinking is a proprietary model with a 200K token context window. It uses explicit chain-of-thought reasoning, which typically improves performance on math and complex reasoning tasks at the cost of higher latency and token usage.

Claude Opus 4.5 Thinking sits inside the Claude Opus 4.5 family alongside Claude Opus 4.5. This profile currently has 1 of 178 tracked benchmarks. BenchLM only exposes non-generated benchmark rows publicly, so missing categories stay blank until a sourced evaluation is available.

Ranking Distribution

Category rank across 0 benchmark categories — sorted by best rank

No ranking data available

Category Performance

Scores across all benchmark categories (0-100 scale)

Category Breakdown

Agentic

0.0/ 100
Weight: 22%0 benchmarks
Terminal-Bench 2.0BrowseCompOSWorld-VerifiedGAIATAU-benchWebArena

Coding

0.0/ 100
Weight: 20%1 benchmark
SWE-bench VerifiedLiveCodeBenchSWE-bench ProSWE-RebenchSciCode

Reasoning

0.0/ 100
Weight: 17%0 benchmarks
MuSRLongBench v2MRCRv2ARC-AGI-2

Knowledge

0.0/ 100
Weight: 12%0 benchmarks
GPQASuperGPQAMMLU-ProHLEFrontierScienceSimpleQA

Math

0.0/ 100
Weight: 5%0 benchmarks
AIME 2025BRUMO 2025MATH-500FrontierMath

Multilingual

0.0/ 100
Weight: 7%0 benchmarks
MGSMMMLU-ProX

Multimodal

0.0/ 100
Weight: 12%0 benchmarks
MMMU-ProOfficeQA ProCharXivCharXiv w/o tools

Inst. Following

0.0/ 100
Weight: 5%0 benchmarks
IFEvalIFBench

Benchmark Details

Only benchmark rows with an attached exact-source record are shown here. Source-unverified manual rows and generated rows are hidden from model pages.

Claude Opus 4.5 Family

reasoning · thinking

Canonical Entry

Claude Opus 4.5

Frequently Asked Questions

How does Claude Opus 4.5 Thinking perform overall in AI benchmarks?

Claude Opus 4.5 Thinking has 1 published benchmark scores on BenchLM, but it does not yet have enough non-generated coverage to receive a global overall rank.

Is Claude Opus 4.5 Thinking good for coding and programming?

Claude Opus 4.5 Thinking has visible benchmark coverage in coding and programming, but BenchLM does not currently assign it a global category rank there.

Which sibling models are related to Claude Opus 4.5 Thinking?

Claude Opus 4.5 Thinking belongs to the Claude Opus 4.5 family. Related variants on BenchLM include Claude Opus 4.5.

Does Claude Opus 4.5 Thinking have full benchmark coverage on BenchLM?

Not yet. Claude Opus 4.5 Thinking currently has 1 published benchmark scores out of the 178 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.

What is the context window size of Claude Opus 4.5 Thinking?

Claude Opus 4.5 Thinking has a context window of 200K, which determines how much text it can process in a single interaction.

Last updated: April 24, 2026 · Runtime metrics stay blank until BenchLM has a sourced snapshot.

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