Anthropic · Claude
Claude Opus 4.8
CurrentActiveDesignated current flagship; reliability-focused Opus (4x less likely than 4.7 to let its own code flaws pass). 1M context, $5/$25, effort levels through xhigh/max, Fast mode at $10/$50. Guide positions Fable 5 one tier above it.
About this version
Claude Opus 4.8 is the current flagship model in Anthropic’s Claude family, released on 28 May 2026 and listed as active. It retains a 1‑million‑token context window and is positioned as a reliability‑focused iteration, reported to be about four times less likely than its predecessor (Opus 4.7) to allow code flaws to pass unnoticed, with tiered pricing options for different effort levels.
- API string
- claude-opus-4-8
- Context window
- 1M ctx
- Tier
- Flagship
- Released
- May 28, 2026
Release & change timeline
1 event- Release
Claude Opus 4.8 released
Current flagship; reliability-focused (4x less likely than 4.7 to let its own code flaws pass), Fast mode, Dynamic Workflows.
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Part of the Claude version timeline. Catch Me Up — everything that changed across AI & smart home ↗