Anthropic: Claude Sonnet 4
Analysis Summary
Claude Sonnet 4 is Anthropic's high-capability general model for reasoning, software engineering, and agentic workflows. It combines strong coding and agentic results with a 1M-token context window, vision, file input, tool use, and function calling. Its instruction-following and long-context results also support careful work over large documents and codebases.
For Design for Online workflows, it is a strong fit for coding agents, content strategy, complex SEO analysis, document review, and customer-facing writing where consistency matters. Multimodal input expands its usefulness for briefs and visual assets. The main limitation is cost, particularly for output, so it is not the natural choice for high-volume routine generation.
Adopt Sonnet 4 for high-value client work and multi-step automation. Route simple transformations and bulk copy to a cheaper supporting model.
Assessed September 7, 2026
Editorial notes
Claude Sonnet 4 combines strong coding and agentic performance with a 1M-token context window, vision, file input, and reliable tool support. Premium pricing makes it best for high-value workflows rather than bulk generation.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Claude Sonnet 4 combines strong coding and agentic performance with a 1M-token context window, vision, file input, and reliable tool support. Premium pricing makes it best for high-value workflows rather than bulk generation.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
28.9 Intelligence Index·37.6 Coding Index·47.8 Agentic Index·74.3 Math Index
How Anthropic: Claude Sonnet 4 compares
Anthropic: Claude Sonnet 4 ranks #71 of 438 AI models we track for overall intelligence, #105 of 210 for coding, #25 of 192 for agentic tasks. Its 1M-token context window is larger than 83% of the models we list. At $3.00 per million input tokens it is cheaper than 10% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on business fit. The pulled-in intelligence corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $3.00 | $0.003000 |
| Output | $15.00 | $0.015000 |
What would Anthropic: Claude Sonnet 4 cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 779 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Anthropic: Claude Sonnet 4 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout Anthropic: Claude Sonnet 4
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),..
Frequently asked questions about Anthropic: Claude Sonnet 4
How much does Anthropic: Claude Sonnet 4 cost?
Anthropic: Claude Sonnet 4 costs $3.00 per million input tokens and $15.00 per million output tokens.
What is the context window of Anthropic: Claude Sonnet 4?
Anthropic: Claude Sonnet 4 has a context window of 1,000,000 tokens (1M).
Is Anthropic: Claude Sonnet 4 good for coding?
On our coding benchmark index, Anthropic: Claude Sonnet 4 ranks #105 of 210 models, placing it in the broader range of the field for code generation and debugging.
What can Anthropic: Claude Sonnet 4 do?
Anthropic: Claude Sonnet 4 supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Sonnet 4?
Anthropic: Claude Sonnet 4 is developed by Anthropic and was released on May 22, 2025.