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Grok 4.3API
Grok 4.3 is a reasoning model from SpaceXAI.
Prices update automatically — checked daily against provider list prices.
- $1.56 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 58% of the 192 commercial models tracked here
- 2 of 6 xAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for Grok 4.3, measured by Artificial Analysis. Higher is better. Measurement mode: high.
Models at this level cost $1.35 per 1M tokens (median of 24) — this one costs $1.56.
Cheaper and better on this index: GLM 5.3 Flash · Gemini 3.7 Flash · Gemini 3.7 Flash (batch) and 27 more
About this model
Grok 4.3 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 4.3?
Grok 4.3 is an AI language model from xAI. It is a proprietary model, available through an API. It scores 37.9 on the Artificial Analysis intelligence index.
Is Grok 4.3 free?
Grok 4.3 is not free: it costs $1.25 per million input tokens and $2.5 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Grok 4.3 good at?
Independent benchmarks from Artificial Analysis give it GPQA 90.1%, Humanity's Last Exam 37.2%, Long Context Reasoning 66%, SciCode 47.3%, IFBench 81.3%, τ²-Bench 97.7%, τ-Bench Banking 12.4%, Terminal-Bench 39.7%, Terminal-Bench Hard 37.9%. It is particularly used for code generation.