Claude Sonnet 4 — AI Model Review & Pricing
Anthropic's balanced model. Offers most of Opus's capability at significantly lower latency and cost.
Specifications
| Attribute | Value |
|---|---|
| Lab | Anthropic |
| Tags | Intelligent Coding Multimodal |
| Release Date | 2026-02 |
| Context Window | 200,000 tokens |
| Input Price / 1M | $3.00 |
| Output Price / 1M | $15.00 |
| Input Modalities | Text |
| Output Modalities | Text |
Strengths
- Excellent instruction following
- Strong coding ability
- Good reasoning
- Fast inference
- Competitive pricing
Weaknesses
- Creative depth below Opus
- Long-form writing less nuanced
Best For
- Day-to-day coding
- Customer-facing chat
- Content drafting
- General productivity
In Depth: Claude Sonnet 4
Summary
Claude Sonnet 4 is an AI model from Anthropic ranked #24 of 124 on the LMRank leaderboard.
Released 2026-02. It currently appears in the Overall category on LMRank. It supports Text input and produces Text output, with a context window of 200,000 tokens. Input pricing is $3.00 per 1M tokens and output is $15.00 per 1M tokens on OpenRouter.