Anthropic
Claude Opus 4.8
Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents
anthropic/claude-opus-4-8
Context
1M
Output
128K
Released
2026-05-28
Knowledge cutoff
2026-01
Types
Reasoning
Tool use
Structured output
Attachments
Open weights
Provider pricing
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
- Price
- $5.00 / $25.00
- Context
- 1M
- Status
- Stable
Benchmarks
SWE-Bench Pro
69.2 · resolve rate
Terminal-Bench
74.6 · success rate
SWE-Bench Verified
88.6 · resolved
Humanity's Last Exam
49.8 · accuracy
Humanity's Last Exam
57.9 · accuracy
OSWorld-Verified
83.4 · success rate
FrontierCode
13.4 · pass rate
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