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Claude Sonnet 4.6API
Claude Sonnet 4.6 (Anthropic): live API pricing, context window and the best open-source alternatives, tracked daily by olud.ai.
Prices update automatically — checked hourly against provider list prices.
Benchmarks & performance
Independent benchmark scores for Claude Sonnet 4.6, measured by Artificial Analysis. Higher is better. Measurement mode: Adaptive Reasoning, Max Effort.
About this model
Claude Sonnet 4.6 is a commercial AI model by Anthropic. The specifications below are tracked automatically: pricing is refreshed hourly from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is Claude Sonnet 4.6?
Claude Sonnet 4.6 is an AI language model from Anthropic. It is a proprietary model, available through an API. It scores 47.2 on the Artificial Analysis intelligence index.
Is Claude Sonnet 4.6 free?
Claude Sonnet 4.6 is not free: it costs $3 per million input tokens and $15 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Claude Sonnet 4.6 good at?
Independent benchmarks from Artificial Analysis give it GPQA 87.5%, Humanity's Last Exam 30%, Long Context Reasoning 70.7%, SciCode 46.8%, IFBench 56.6%, τ²-Bench 75.7%, τ-Bench Banking 30.5%, Terminal-Bench 71.2%, Terminal-Bench Hard 53%. It is particularly used for code generation.