Claude Sonnet 4
AnthropicASL-2Claude Sonnet 4 was released May 22, 2025, marking the transition to the Claude 4 generation with a new naming convention. Scored 72.7% on SWE-bench Verified. Priced at \$3/\$15 per million tokens with a 200K token context window (1M beta added later).
Pricing
| Type | Price per MTok |
|---|---|
| Input | $3 |
| Output | $15 |
Benchmarks1
| Benchmark | Score |
|---|---|
| SWE-bench Verified | 72.7% |
Claude Family13
| Model | Tier | Released | Input $/MTok |
|---|---|---|---|
| Claude Sonnet 4.6 | sonnet | 2026-02-17 | $3 |
| Claude Opus 4.6 | opus | 2026-02-05 | $5 |
| Claude Opus 4.5 | opus | 2025-11-24 | $5 |
| Claude Haiku 4.5 | haiku | 2025-10-15 | $1 |
| Claude Sonnet 4.5 | sonnet | 2025-09-29 | $3 |
| Claude Opus 4.1 | opus | 2025-08-05 | $15 |
| Claude Opus 4 | opus | 2025-05-22 | $15 |
| Claude 3.7 Sonnet | sonnet | 2025-02-24 | $3 |
| Claude 3.5 Haiku | haiku | 2024-11-04 | $0.8 |
| Claude 3.5 Sonnet | sonnet | 2024-06-20 | $3 |
| Claude 3 Opus | opus | 2024-03-04 | $15 |
| Claude 3 Sonnet | sonnet | 2024-03-04 | $3 |
| Claude 3 Haiku | haiku | 2024-03-04 | $0.25 |
Details
Model FamilyClaude
Tiersonnet
Generation4
Release Date2025-05-22
Context Window200K tokens
Safety LevelASL-2
Capabilities2
tool-useextended-thinking
Sources1
Tags
claudeclaude-4