Claude Opus 4.1
deprecated
Anthropic2025-08-05
Specifications
Modalities
text
image
Context Window200K tokens
Max Output32K tokens
Training Cutoff2025-03-01
Open SourceNo
Pricing (per 1M tokens)
Input$15.0000
Output$75.0000
Cache Read$1.5000
Benchmarks
Arena score (text)1450
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench-
GPQA Diamond-
HumanEval-
ARC-AGI-
MATH-
API
Model ID
claude-opus-4-1-20250805Sources
- Anthropic: Model deprecations (deprecated 2026-06-05, retires 2026-08-05)
general · as of 2026-07-04
- Anthropic: Pricing
pricing · as of 2026-07-04
- LMArena: Arena leaderboard dataset, text_style_control overall: Claude Opus 4.1 (Thinking 16K, 20250805)
elo rating · as of 2026-10-28