Claude Sonnet 4.6vsClaude Sonnet 4.5
Across 12 shared benchmarks, Claude Sonnet 4.6 leads overall: Claude Sonnet 4.6 wins 9, Claude Sonnet 4.5 wins 3, with 0 ties and an average score difference of +14.26.
Claude Sonnet 4.6
Anthropic · 2026-02-17 · Chat model
Claude Sonnet 4.5
Anthropic · 2025-09-30 · Chat model
Claude Sonnet 4.69 wins(75%)(25%)3 winsClaude Sonnet 4.5
Benchmark scores
Grouped by capability, sorted by largest gap within each. 12 shared benchmarks.
General Knowledge
Claude Sonnet 4.6 3/3| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| ARC-AGI-2 | 58.3018 / 59 | 13.6035 / 59 | +44.70 |
| HLE | 4925 / 157 | 33.6067 / 157 | +15.40 |
| GPQA Diamond | 89.9021 / 178 | 83.4058 / 178 | +6.50 |
AI Agent - Tool Usage
Claude Sonnet 4.6 2/2| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| Terminal Bench 2.0 | 59.1022 / 46 | 42.8041 / 46 | +16.30 |
| OSWorld-Verified | 72.5010 / 18 | 61.4014 / 18 | +11.10 |
Agent Level Benchmark
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| τ²-Bench - Telecom | 97.909 / 35 | 985 / 35 | -0.10 |
AI Agent - Information Search
Claude Sonnet 4.6 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| BrowseComp | 74.7020 / 45 | 24.1043 / 45 | +50.60 |
Claw-style Agent Evaluation
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| Pinch Bench | 885 / 37Thinking (With Tools) | 88.204 / 37Thinking (With Tools) | -0.20 |
Coding and Software Engineer
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| SWE-bench Verified | 79.6017 / 108 | 826 / 108 | -2.40 |
Long Context
Claude Sonnet 4.6 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| AA-LCR | 711 / 13 | 668 / 13 | +5 |
Math and Reasoning
Claude Sonnet 4.6 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| FrontierMath - Tier 4 | 8.3034 / 80Thinking (No Tools, 16K Budget) | 2.1056 / 80Normal (No Tools) | +6.20 |
Productivity Knowledge
Claude Sonnet 4.6 1/1| Benchmark | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Diff |
|---|---|---|---|
| GDPval-AA | 5711 / 21 | 3916 / 21 | +18 |
Specs
| Field | Claude Sonnet 4.6 | Claude Sonnet 4.5 |
|---|---|---|
| Publisher | Anthropic | Anthropic |
| Release date | 2026-02-17 | 2025-09-30 |
| Model type | Chat model | Chat model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 1M | 1000K |
| Max output | 8K | 64K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | Claude Sonnet 4.6 | Claude Sonnet 4.5 |
|---|---|---|
| Text input | $3 / 1M tokens | Not public |
| Text output | $15 / 1M tokens | Not public |
| Cache read | $0.3 / 1M tokens | Not public |
| Cache write | $3.75 / 1M tokens | Not public |
One or both models have incomplete public pricing.
Summary
- Claude Sonnet 4.6leads in:General Knowledge (3/3), AI Agent - Tool Usage (2/2), AI Agent - Information Search (1/1), Long Context (1/1), Math and Reasoning (1/1), Productivity Knowledge (1/1)
- Claude Sonnet 4.5leads in:Agent Level Benchmark (1/1), Claw-style Agent Evaluation (1/1), Coding and Software Engineer (1/1)
On average across the 12 shared benchmarks, Claude Sonnet 4.6 scores 14.26 higher.
Largest single-benchmark gap: BrowseComp — Claude Sonnet 4.6 74.70 vs Claude Sonnet 4.5 24.10 (+50.60).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.