---
title: "grok-3-mini-fast - Model Details & Comparison"
description: "grok-3-mini-fast from xAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models."
url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-3-mini-fast"
markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-3-mini-fast.md"
---

# grok-3-mini-fast - Model Details & Comparison

> grok-3-mini-fast from xAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models.

## Important Links

- [View MCP Gateway](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources/mcp-gateway.md)
- [Features](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/#features)
- [Enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise)
- [Pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md)
- [Docs](https://docs.getbifrost.ai)
- [GitHub](https://github.com/maximhq/bifrost)
- [Book a Demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo)

## About grok-3-mini-fast

grok-3-mini-fast is a chat model from xAI, one of 41 chat models they offer. It is priced at $0.30 per 1M input tokens and $0.50 per 1M output tokens, ranking 1107 out of 2669 chat models by cost and cheaper than 58% of models in this category. grok-3-mini-fast supports function calling, reasoning, web search, prompt caching — one of only 7 chat models with this combination. It accepts up to 131K input tokens.

## Specifications

- **xAI Provider.**
- **Chat Mode.**
- **131,072 Max Input Tokens.**
- **131,072 Max Output Tokens.**
- **131,072 Max Tokens.**
- **$0.30 / 1M tokens Input Price.**
- **$0.50 / 1M tokens Output Price.**

## Capabilities

grok-3-mini-fast supports: Function Calling, Reasoning, Web Search, Prompt Caching, Tool Choice.

## grok-3-mini-fast Pricing Overview

At $0.30 per 1M input tokens and $0.50 per 1M output tokens, grok-3-mini-fast ranks 1107 out of 2669 chat models by input cost. It is more affordable compared to the median of $0.50 for chat models, and is cheaper than 58% of models in this category.

grok-3-mini-fast is one of 41 xAI chat models, one of only 7 chat models combining function calling, prompt caching, reasoning, web search.

## Models to Compare

Alternatives to grok-3-mini-fast with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| gemini-2.5-flash | Vertex AI | $0.30 | $2.50 |
| gemini-2.5-flash-preview-09-2025 | Vertex AI | $0.30 | $2.50 |
| gemini-2.5-flash | Google Gemini | $0.30 | $2.50 |
| gemini-2.5-flash-preview-09-2025 | Google Gemini | $0.30 | $2.50 |
| gemini-flash-lite-latest | Google Gemini | $0.25 | $1.50 |

- [Compare gemini-2.5-flash](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-2.5-flash.md)
- [Compare gemini-2.5-flash-preview-09-2025](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-2.5-flash-preview-09-2025.md)
- [Compare gemini-2.5-flash](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-2.5-flash.md)
- [Compare gemini-2.5-flash-preview-09-2025](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-2.5-flash-preview-09-2025.md)
- [Compare gemini-flash-lite-latest](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-flash-lite-latest.md)

## Related Resources

- [Calculate grok-3-mini-fast costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/xai/model/grok-3-mini-fast.md)
- [All xAI pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/xai.md)

## FAQ

### Is grok-3-mini-fast cheaper than gemini-2.5-flash?

No. grok-3-mini-fast costs $0.30 per 1M input tokens while gemini-2.5-flash costs $0.30 per 1M input tokens, making gemini-2.5-flash 0% more affordable for input. However, grok-3-mini-fast may offer different capabilities or performance characteristics that justify the price difference.

### How does grok-3-mini-fast pricing compare to the average chat model?

grok-3-mini-fast input pricing is $0.30 per 1M tokens, which is 40% below the median of $0.50 for chat models. It ranks 1107 out of 2669 chat models by input cost, making it cheaper than 58% of models in this category. For output, it costs $0.50 per 1M tokens compared to the median of $1.44.

### What makes grok-3-mini-fast different from other xAI models?

Among xAI's 41 chat models, grok-3-mini-fast ranks 10 by input cost. Its combination of function calling, prompt caching, reasoning, web search is shared by only 6 other chat models.

### What are the best alternatives to grok-3-mini-fast?

The most comparable chat models to grok-3-mini-fast are: gemini-2.5-flash from Vertex AI ($0.30/1M input tokens); gemini-2.5-flash-preview-09-2025 from Vertex AI ($0.30/1M input tokens); gemini-2.5-flash from Google Gemini ($0.30/1M input tokens); gemini-2.5-flash-preview-09-2025 from Google Gemini ($0.30/1M 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 calculate grok-3-mini-fast costs?

grok-3-mini-fast 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 $0.30 and generating 1M output tokens costs $0.50.

## Related Resources

- [xAI models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/xai.md)
- [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md)
- [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md)
- [Docs: Bifrost docs](https://docs.getbifrost.ai)
- [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost)
- [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md)
- [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise)
- [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo)
- [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md)

---

*This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-3-mini-fast](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-3-mini-fast) for AI/LLM consumption.*