Grok 4 Fast

Grok 4 Fast by xAI excels in the Coding category, where it ranks #35 with a composite score of 64/100. Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Read more about the model on xAI's [news post](http://x.ai/news/grok-4-fast). Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens) It is particularly strong in areas highlighted by its top benchmark performance and adoption metrics, making it suitable for both individual developers and enterprise teams looking for a reliable coding solution.

Grok 4 Fast is priced at $0.20 per million input tokens and $0.50 per million output tokens (USD). Contact the provider for volume discounts and enterprise pricing. Pricing is competitive within the coding category and reflects the model's quality-to-cost ratio.

In the Coding category, Grok 4 Fast holds rank #35 out of 6 models tracked. Its quality rank is #35 and adoption rank is #35. You can use our comparison tool at /compare to see detailed side-by-side metrics with specific alternatives. Key differentiators include its composite scoring across benchmarks, community sentiment, and real-world adoption rates.

Grok 4 Fast has been evaluated across 6 different signals. Its strongest areas include Capabilities (86/100), Context Window (100/100), Output Capacity (75/100). These scores are derived from industry-standard benchmarks, community ratings, and real-world performance metrics. The composite score of 64/100 reflects a weighted combination of all tracked signals.

Grok 4 Fast is a paid model, though some providers may offer trial credits or limited free tiers for evaluation. Check xAI's website for current free tier availability and promotional offers.