Claude Opus 5
Anthropic
Anthropic's newest base line — top-10 quality on a huge vote base.
Ranked #10 of 402 on LMArena's overall board (style control) · retrieved 2026-09-19
The numbers
Arena Score (LMArena, style control)1492.9 (1488.7–1497.1, 42,617 votes)
Coding board score1533.3 (#12, 11,403 votes)
Intelligence Index (Artificial Analysis)50.7
Median output speed~51 tokens/sec
Price per 1M tokens in/out (LMArena)$5 / $25
Context window~1M
LicenseProprietary
Released2026-07-24
Exact source entries: LMArena “claude-opus-5-high” · Artificial Analysis “Claude Opus 5 (Adaptive Reasoning, Max Effort)”, retrieved 2026-09-19.
Try or learn moreHonest read
Best at
- Arena Score 1493 across 42,617 votes — a trustworthy score
- Intelligence Index 50.7, third-best we recorded
- $5 / $25 per million tokens — half of Fable pricing
Not the pick for
- Sits behind Anthropic's own Fable 5 and Opus 4.6/4.7 on the overall board
- Measured output speed 51 tokens/second — the slowest of our top 10
Choose it if you are
Teams standardizing on Anthropic's newest generation who want the long-supported base model.
Rankings come from the sources above; this plain-language read is our editorial summary of those numbers.
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