Claude 3 Sonnet
Analysis Summary
Claude 3 Sonnet is an Anthropic general-purpose model with an intelligence index of 4.4. Its MMLU Pro result of 0.579 and coding-related measurements support useful drafting, summarisation, structured responses, and routine programming assistance. The available results are stronger for language work than for advanced reasoning or engineering.
It suits reviewed client copy, content repurposing, email drafts, and internal knowledge tasks where consistency matters but the problem is not deeply technical. The pricing data lists input at 3 and output at 15, which weakens its case for high-volume work when stronger budget alternatives exist. Use it only for existing workflows that value its writing style, not as a new default for demanding client delivery.
Assessed August 9, 2026
Editorial notes
Claude 3 Sonnet offers the strongest content profile among the older Claude entries here, with useful instruction handling and coding support, but its measured reasoning remains far behind current professional models.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Claude 3 Sonnet offers the strongest content profile among the older Claude entries here, with useful instruction handling and coding support, but its measured reasoning remains far behind current professional models.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
4.4 Intelligence Index
How Claude 3 Sonnet compares
Claude 3 Sonnet ranks #365 of 428 AI models we track for overall intelligence. 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 content. The pulled-in technical 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 Claude 3 Sonnet 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 717 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Claude 3 Sonnet for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamFrequently asked questions about Claude 3 Sonnet
How much does Claude 3 Sonnet cost?
Claude 3 Sonnet costs $3.00 per million input tokens and $15.00 per million output tokens.
Who created Claude 3 Sonnet?
Claude 3 Sonnet is developed by Anthropic and was released on March 4, 2024.