Claude Opus 4.5
active
Anthropic2025-11-24
Specifications
Modalities
text
image
Context Window200K tokens
Max Output64K tokens
Training Cutoff2025-08-01
Open SourceNo
Pricing (per 1M tokens)
Input$5.0000
Output$25.0000
Cache Read$0.5000
Benchmarks
Arena score (text)1474
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench80.9
GPQA Diamond87.0
HumanEval-
ARC-AGI-
MATH-
Sources
- Anthropic: Models overview (Legacy models)
general · as of 2026-07-04
- Anthropic: Pricing
pricing · as of 2026-07-04
- LMArena: Arena leaderboard dataset, text_style_control overall: Claude Opus 4.5 (High, 32K, 20251101)
elo rating · as of 2026-10-28
- LLM Stats: Claude Opus 4.5 Benchmarks, Pricing & Context Window
swe bench · as of 2026-11-03