Model card
Claude Opus 4.5.
Anthropicapi2 current SOTA
Anthropic flagship coding agent model, 2025.
§ 01 · Benchmarks
Every benchmark Claude Opus 4.5 has a recorded score for.
| # | Benchmark | Area · Task | Metric | Value | Rank | Date | Source |
|---|---|---|---|---|---|---|---|
| 01 | Tau2-Bench | Agentic AI · Tool Use | pass_rate | 79.0% | #1 | 2025-11-24 | source ↗ |
| 02 | SWE-bench Verified | Agentic AI · Autonomous Coding | pct_resolved | 80.9% | #1 | — | source ↗ |
| 03 | MMLU | Reasoning · Commonsense Reasoning | accuracy | 91.8% | #3 | 2026-01-01 | source ↗ |
Rank column shows this model’s position vs all other models scored on the same benchmark + metric (competitors after the slash). #1 in red means current SOTA. Sorted by rank, then newest result.
§ 02 · Strengths by area
Where Claude Opus 4.5 actually performs.
§ 04 · Related models
Other Anthropic models scored on Codesota.
Claude Opus 4
Undisclosed params · 13 results · 2 SOTA
Claude Sonnet 5
Undisclosed params · 2 results · 2 SOTA
Claude Sonnet 4
10 results · 1 SOTA
Claude Mythos Preview
1 result · 1 SOTA
Claude 3.5 Sonnet
Undisclosed params · 27 results
Claude Opus 4.5
Undisclosed params · 13 results
Claude 3.7 Sonnet
10 results
Claude 3 Opus
5 results
§ 05 · Sources & freshness
Where these numbers come from.
editorial
2
results
codesota-shadow-mmlu
1
result
1 of 3 rows marked verified. · first result 2025-11-24, latest 2026-01-01.