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Grok 4.5API
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
Prices update automatically — checked daily against provider list prices.
- $3 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 39% of the 192 commercial models tracked here
- 6 of 6 xAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for Grok 4.5, measured by Artificial Analysis. Higher is better. Measurement mode: high.
Models at this level cost $4.5 per 1M tokens (median of 17) — this one costs $3.
Cheaper and better on this index: GPT-5.6 Sol (batch) · GLM 5.3 · GLM 5.3 Flash and 4 more
About this model
Grok 4.5 is a commercial AI model by xAI. 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 Grok 4.5?
Grok 4.5 is an AI language model from xAI. It is a proprietary model, available through an API. It scores 55.8 on the Artificial Analysis intelligence index.
Is Grok 4.5 free?
Grok 4.5 is not free: it costs $2 per million input tokens and $6 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Grok 4.5 good at?
Independent benchmarks from Artificial Analysis give it GPQA 93.1%, Humanity's Last Exam 42.7%, Long Context Reasoning 74%, SciCode 54.1%, τ-Bench Banking 42.1%, Terminal-Bench 81.6%. It is particularly used for code generation.
How fast is Grok 4.5?
It generates about 50.3 tokens per second, with a median 11.32s delay before the first token. Measured independently by Artificial Analysis.