--- title: "grok-4-fast-reasoning Cost Calculator - Azure" description: "Calculate the cost of using grok-4-fast-reasoning from Azure. Input costs $0.20 and output $0.50 per 1M tokens." url: "https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-4-fast-reasoning" markdown: "https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-4-fast-reasoning.md" --- # grok-4-fast-reasoning Cost Calculator - Azure > Calculate the cost of using grok-4-fast-reasoning from Azure. Input costs $0.20 and output $0.50 per 1M tokens. ## Important Links - [View MCP Gateway](https://www.getmaxim.ai/bifrost/resources/mcp-gateway.md) - [Features](https://www.getmaxim.ai/bifrost/#features) - [Enterprise](https://www.getmaxim.ai/bifrost/enterprise) - [Pricing](https://www.getmaxim.ai/bifrost/pricing.md) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://www.getmaxim.ai/bifrost/book-a-demo) ## About grok-4-fast-reasoning grok-4-fast-reasoning is a chat model from Azure, one of 221 chat models they offer. It is priced at $0.20 per 1M input tokens and $0.50 per 1M output tokens, ranking 859 out of 2912 chat models by cost and cheaper than 70% of models in this category. grok-4-fast-reasoning supports function calling, web search, structured output — one of only 7 chat models with this combination. It accepts up to 131K input tokens. ## Pricing Published Azure pricing for grok-4-fast-reasoning. - **$0.20 / 1M tokens Input.** - **$0.50 / 1M tokens Output.** ## Technical Specifications - **Chat Mode.** - **131,072 Max Input Tokens.** - **131,072 Max Output Tokens.** - **131,072 Max Tokens.** ## Model Capabilities grok-4-fast-reasoning supports: Function Calling, Web Search, Response Schema, Tool Choice. ## How Pricing Compares At $0.20 per 1M input tokens and $0.50 per 1M output tokens, grok-4-fast-reasoning ranks 859 out of 2912 chat models by input cost. It is more affordable compared to the median of $0.55 for chat models, and is cheaper than 70% of models in this category. grok-4-fast-reasoning is one of 221 Azure chat models, one of only 7 chat models combining function calling, structured output, web search. | Model | Provider | Input $/1M | Output $/1M | vs grok-4-fast-reasoning | | --- | --- | --- | --- | --- | | gemini-3.1-flash-lite-preview | Google Gemini | $0.25 | $1.50 | +25% | | gemini-3.1-flash-lite | Google Gemini | $0.25 | $1.50 | +25% | | gpt-5.6-luna | OpenAI | $0.20 | $1.20 | 0% | | gpt-5.4-nano | OpenAI | $0.20 | $1.25 | 0% | | gpt-5.4-nano-2026-03-17 | OpenAI | $0.20 | $1.25 | 0% | ## More from Azure - [grok-4-fast-non-reasoning ($0.20/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-4-fast-non-reasoning.md) - [grok-code-fast-1 ($0.20/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-code-fast-1.md) - [gpt-5.4-nano ($0.20/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/gpt-5.4-nano.md) - [gpt-5.4-nano-2026-03-17 ($0.20/1M input)](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/gpt-5.4-nano-2026-03-17.md) ## Related Resources - [Azure AI status](https://www.getmaxim.ai/bifrost/provider-status/azure.md) - [grok-4-fast-reasoning specifications](https://www.getmaxim.ai/bifrost/model-library/compare/azure/grok-4-fast-reasoning.md) - [All Azure pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure.md) ## FAQ ### Is grok-4-fast-reasoning cheaper than gemini-3.1-flash-lite-preview? Yes. grok-4-fast-reasoning costs $0.20 per 1M input tokens compared to gemini-3.1-flash-lite-preview's $0.25 per 1M input tokens, making it 25% more affordable. Both are chat models and share support for vision, function calling, reasoning, audio input, web search, prompt caching, structured output. ### How does grok-4-fast-reasoning pricing compare to the average chat model? grok-4-fast-reasoning input pricing is $0.20 per 1M tokens, which is 64% below the median of $0.55 for chat models. It ranks 859 out of 2912 chat models by input cost, making it cheaper than 70% of models in this category. For output, it costs $0.50 per 1M tokens compared to the median of $1.50. ### What makes grok-4-fast-reasoning different from other Azure models? Among Azure's 221 chat models, grok-4-fast-reasoning ranks 43 by input cost. Its combination of function calling, structured output, web search is shared by only 6 other chat models. ### What are the best alternatives to grok-4-fast-reasoning? The most comparable chat models to grok-4-fast-reasoning are: gemini-3.1-flash-lite-preview from Google Gemini ($0.25/1M input tokens); gemini-3.1-flash-lite from Google Gemini ($0.25/1M input tokens); gpt-5.6-luna from OpenAI ($0.20/1M input tokens); gpt-5.4-nano from OpenAI ($0.20/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library. ### How do I check if Azure AI is down? You can monitor Azure AI service health in real time on the Bifrost Azure AI Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### How do I calculate grok-4-fast-reasoning costs? grok-4-fast-reasoning is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $0.20 and generating 1M output tokens costs $0.50. ## Related Resources - [All Azure pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure.md) - [LLM cost calculator](https://www.getmaxim.ai/bifrost/llm-cost-calculator.md) - [Model library](https://www.getmaxim.ai/bifrost/model-library.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://www.getmaxim.ai/bifrost/pricing.md) - [Enterprise: Bifrost enterprise](https://www.getmaxim.ai/bifrost/enterprise) - [Book a Demo: Bifrost demo](https://www.getmaxim.ai/bifrost/book-a-demo) - [Resources: Bifrost resources](https://www.getmaxim.ai/bifrost/resources.md) --- *This is a markdown version of [https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-4-fast-reasoning](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/azure/model/grok-4-fast-reasoning) for AI/LLM consumption.*