Claude Opus 4.8
active
Anthropic2026-05-28
Specifications
Modalities
text
image
Context Window1000K tokens
Max Output128K tokens
Training Cutoff2026-01-01
Open SourceNo
Pricing (per 1M tokens)
Input$5.0000
Output$25.0000
Cache Read$0.5000
Benchmarks
Arena score (text)1482
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench88.6
GPQA Diamond-
HumanEval-
ARC-AGI-
MATH-
Sources
- Anthropic: Models overview
general · as of 2026-07-04
- Anthropic: Pricing
pricing · as of 2026-07-04
- Anthropic: Introducing Claude Opus 4.8
swe bench · as of 2026-07-04
- LMArena: Arena leaderboard dataset, text_style_control overall: Claude Opus 4.8 (High)
elo rating · as of 2026-10-28