Claude Sonnet 4.5
deprecated
Anthropic2025-09-29
Specifications
Modalities
text
image
Context Window200K tokens
Max Output64K tokens
Training Cutoff2025-07-01
Open SourceNo
Pricing (per 1M tokens)
Input$3.0000
Output$15.0000
Cache Read$0.3000
Benchmarks
Arena score (text)1456
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench77.2
GPQA Diamond83.4
HumanEval-
ARC-AGI-
MATH-
Sources
- Anthropic: Models overview (Legacy models)
general · as of 2026-07-04
- Anthropic: Pricing
pricing · as of 2026-07-04
- Anthropic: Introducing Claude Sonnet 4.5
swe bench · as of 2026-07-04
- Anthropic: Model deprecations
status · as of 2026-11-02
- LMArena: Arena leaderboard dataset, text_style_control overall: Claude Sonnet 4.5 (High, 32K, 20250929)
elo rating · as of 2026-10-28