Claude
Overview
Anthropic's large language model family, known for coding, agentic tasks and knowledge work. The current flagship is Claude Opus 5.5, alongside Sonnet 5.5, Haiku 5.5 and Fable 5.1 in the same generation.
Field checks and source notes
When sources disagree on a field, every reading is listed here with its own citation. We do not take a midpoint, invent a missing figure, or decide which side is right — follow the citation and judge for your case.
These field-level notes are recorded verbatim in Chinese in the source data. Open the Chinese version
Plain-language benchmarks
Practical facts
| Context length | Not disclosed |
|---|---|
| Max output | Not disclosed |
| Parameters | Not disclosed |
| Input | $4.00 USD / 1M tokens |
| Output price | $20.00 USD / 1M tokens |
| CNY | Not disclosed |
| Free tier | Not disclosed |
| Output speed | Not disclosed |
| Release date | |
| License | Not disclosed |
Show technical data
Technical benchmark table
This model is evaluated per reasoning tier; available tiers: low / medium / high / xhigh / max. Each row below shows the highest tier measured for that benchmark. Tier switching happens on the compare page.
| Benchmark | Score | Max / unit | Source type | Source | Test date | Conditions |
|---|---|---|---|---|---|---|
| AA Intelligence Index aa-intelligence-index · v5 | 59.1 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Finance & Accounting aa-finance-index · v5 | 59.4 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Strategy & Ops aa-strategy-index · v5 | 61.4 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Legal aa-legal-index · v5 | 58 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Economics aa-economics-index · v5 | 60.3 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Engineering aa-engineering-index · v5 | 65.3 | score_0_100 / 100 | Independent test | Tiermax | ||
| AA Healthcare & Medical aa-healthcare-index · v5 | 57.9 | score_0_100 / 100 | Independent test | Tiermax | ||
| LMArena text preference lmarena-text | 1505 | elo_like | Human preference | Tierhigh | ||
| Terminal-Bench terminal-bench · 4.0 | 66.4% | percent / 100 | Vendor-reported | Tierxhigh | ||
| HLE hle | 67.7% | percent / 100 | Vendor-reported | 带工具（with tools） |
| Version | Release date | Status | Openness | Parameters | What changed | Detail | |
|---|---|---|---|---|---|---|---|
| Claude Haiku 5.5 | Active | Closed source | Not disclosed | TBD | Detail | ||
| Claude Sonnet 5.5 | Active | Closed source | Not disclosed | TBD | Detail | ||
| Claude Opus 5.5Showing version | Active | Closed source | Not disclosed | TBD | Detail | ||
| Claude Fable 5.1 | Active | Closed source | Not disclosed | TBD | Detail | ||
| Claude Opus 5 | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| Claude Opus 4.5 | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| Claude Sonnet 4.5 | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| Claude 3.5 Sonnet | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| Claude 3 | Discontinued | Closed source | Not disclosed | TBD | Detail | ||
| Claude 1 | Discontinued | Closed source | Not disclosed | TBD | Detail |
Last updated: · Sources on detail page