Anthropic
Anthropic's latest generally available Opus-tier model for complex reasoning, long-horizon agentic coding, high-autonomy work, and computer-use workflows. Builds on Opus 4.
Anthropic's latest generally available Opus-tier model for complex reasoning, long-horizon agentic coding, high-autonomy work, and computer-use workflows.
This model is still tracked for research and discovery, but it is excluded from default public rankings until it returns to active status.
41.1
Quality Score
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Arena ELO
1M
Parameters
1M
Context
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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May 2026
Released
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
Claude-Opus-4 - LiveCodeBench
LiveCodeBench pass@1 62.4 across 1055 tasks
View sourceIntroducing Claude Opus 4.8
It builds on Opus 4.7 with improvements across benchmarks, and is a more effective collaborator. Opus 4.8’s capabilities The table below shows how Opus 4.8 compares to its predecessor and to other models on tests of coding, agentic skills, reasoning, and practical knowledge work tasks. More details and a much wider range of capability evaluations are provided in the Claude Opus 4.8 System Card .
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