AnthropicClaude Opus 4.8
Is Claude Opus 4.8 out yet?
Yes.
Available
How we confirmed it
Released via official access
May 28, 2026 at 12:00 AM UTC
Benchmarks
LM Arena#11
claude-opus-4-8 · 19,038 votes · captured Jun 30, 2026 · source
1,479
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