Claude Opus 4.6legacy
Anthropic · released Dec 10, 2025
Previous-generation Opus, still competitive on coding arenas with 1M context.
61.2
Podium Score
#236 of 673
1505
Arena Elo
2 on Arena
50 t/s
Output Speed
$15/M
Output Price
$3/M in
1M
Context Window
Scores by Source
Category Scores
📜 Long Context86.3
📐 Math79.6
🧠 Reasoning66.0
🤖 Agentic43.1
intelligence38.8
💻 Coding26.5
👁️ Multimodal11.2
📚 Knowledge2.4
Benchmark Results
AIME 202599.8%
GPQA Diamond91.3%
Multilingual MMLU91.1%
τ²-Bench Retail84.8%
Browsecomp84%
SWE-Bench Verified80.8%
CharXiv Reasoning77.4%
MMMU-Pro77.3%
MRCR v276%
OSWorld72.7%
ARC-AGI-268.8%
MCP Atlas62.7%
LiveCodeBench58.3%
Humanity’s Last Exam53.1%
Terminal-Bench Hard48.5%
SciCode45.7%
Ifbench44.6%
Model Details
| Release date | Dec 10, 2025 |
|---|---|
| Parameters | Not disclosed |
| License | Proprietary |
| Context Window | 1,000,000 tokens |
| Input Price | $3/M |
| Output Price | $15/M |
| Output Speed | 50 t/s |
| Time to First Token | — |