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Claude Haiku 4.5API
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.
Prices update automatically — checked daily against provider list prices.
- $2 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 47% of the 226 commercial models tracked here
- 4 of 30 Anthropic models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for Claude Haiku 4.5, measured by Artificial Analysis. Higher is better. Measurement mode: Reasoning.
About this model
Claude Haiku 4.5 is a commercial AI model by Anthropic. The specifications below are tracked automatically: pricing is refreshed daily 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 Haiku 4.5?
Claude Haiku 4.5 is an AI language model from Anthropic. It is a proprietary model, available through an API.
Is Claude Haiku 4.5 free?
Claude Haiku 4.5 is not free: it costs $1 per million input tokens and $5 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Claude Haiku 4.5 good at?
Independent benchmarks from Artificial Analysis give it GPQA 67.2%, MMLU-Pro 76%, Humanity's Last Exam 10.4%, Long Context Reasoning 74.3%, LiveCodeBench 61.5%, SciCode 42.2%, AIME 2025 83.7%, IFBench 54.3%, τ²-Bench 54.7%, τ-Bench Banking 9.3%, Terminal-Bench 44.2%, Terminal-Bench Hard 27.3%. It is particularly used for code generation.