Anthropic

Claude Opus 4.1legacy

Mid-2025 Opus iteration with improved instruction following.

#532released Aug 4, 2025·Proprietary·Not disclosed
textimage200K ctx
API providersGet API Key →Leaderboard
Intelligence
21.7 #532
Top 72% tier
Output Speed
80 t/s
ITL 12.5 ms/tok
Blended price (3:1)
$6 /1M
In $3/M · Out $15/M
Context
200K
≈ 500 A4 pages · max out 8,192

Quality Domain Radar

6-Axis Frontier Evaluation vs Category Average & Flagship

Claude Opus 4.1
Claude Mythos Preview (#1)
Average (68)
Coding (15)Mathematics (17.7)Hard Science (GPQA) (18.7)Agentic & Tool Use (20)Knowledge (MMLU) (21.7)Vision / Multimodal (30)

Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.

API deployment

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Category Scores

Benchmark Results

Model Details

Release date
Aug 4, 2025
Parameters
Not disclosed
License
Proprietary
Context Window
200,000 tokens
Input Price
$3/M
Output Price
$15/M
Output Speed
80 t/s
Time to First Token
—

Estimated monthly bill

Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...

Cite & embed

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BibTeX
@misc{llmpodium2026claudeopus41,
  title = {Benchmark Analysis and Intelligence Evaluation of Claude Opus 4.1},
  author = {LLMPodium Research},
  year = {2026},
  url = {https://llmpodium.com/models/claude-opus-4-1}
}

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Claude Opus 4.1 LLMPodium Score
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