---
title: "grok-4.20-beta - Model Details & Comparison"
description: "grok-4.20-beta from xAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models."
url: "https://www.getmaxim.ai/bifrost/model-library/compare/xai/grok-4.20-beta"
markdown: "https://www.getmaxim.ai/bifrost/model-library/compare/xai/grok-4.20-beta.md"
---

# grok-4.20-beta - Model Details & Comparison

> grok-4.20-beta from xAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models.

## Important Links

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

## About grok-4.20-beta

grok-4.20-beta is a chat model from xAI, one of 36 chat models they offer. It is priced at $1.25 per 1M input tokens and $2.50 per 1M output tokens, ranking 2760 out of 4042 chat models by cost and cheaper than 31% of models in this category. grok-4.20-beta supports vision, function calling, reasoning, web search, prompt caching, structured output. Its 1,000K-token context window is in the top 28% among chat models.

## Specifications

- **xAI Provider.**
- **Chat Mode.**
- **1,000,000 Max Input Tokens.**
- **1,000,000 Max Output Tokens.**
- **1,000,000 Max Tokens.**
- **$1.25 / 1M tokens Input Price.**
- **$2.50 / 1M tokens Output Price.**

## Capabilities

grok-4.20-beta supports: Function Calling, Vision, Reasoning, Web Search, Prompt Caching, Response Schema, Tool Choice.

## grok-4.20-beta Pricing Overview

At $1.25 per 1M input tokens and $2.50 per 1M output tokens, grok-4.20-beta ranks 2760 out of 4042 chat models by input cost. It is more expensive compared to the median of $0.60 for chat models, and is cheaper than 31% of models in this category.

grok-4.20-beta is one of 36 xAI chat models, with support for vision, function calling, reasoning, web search, prompt caching, structured output. its 1,000K-token context window places it in the top 28% of chat models.

## Models to Compare

Alternatives to grok-4.20-beta with comparable capabilities.

| Model | Provider | Input $/1M | Output $/1M |
| --- | --- | --- | --- |
| gpt-6.1-terra | Azure | $1.10 | $5.50 |
| grok-4.3 | Azure | $1.25 | $2.50 |
| gemini-2.5-pro | Vertex AI | $1.25 | $10.00 |
| gemini-3.5-flash | Vertex AI | $1.50 | $9.00 |
| gemini-2.5-pro | Google Gemini | $1.25 | $10.00 |

- [Compare gpt-6.1-terra](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-6.1-terra.md)
- [Compare grok-4.3](https://www.getmaxim.ai/bifrost/model-library/compare/azure/grok-4.3.md)
- [Compare gemini-2.5-pro](https://www.getmaxim.ai/bifrost/model-library/compare/vertex_ai/gemini-2.5-pro.md)
- [Compare gemini-3.5-flash](https://www.getmaxim.ai/bifrost/model-library/compare/vertex_ai/gemini-3.5-flash.md)
- [Compare gemini-2.5-pro](https://www.getmaxim.ai/bifrost/model-library/compare/gemini/gemini-2.5-pro.md)

## Related Resources

- [All xAI pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/xai.md)

## FAQ

### Is grok-4.20-beta cheaper than gpt-6.1-terra?

No. grok-4.20-beta costs $1.25 per 1M input tokens while gpt-6.1-terra costs $1.10 per 1M input tokens, making gpt-6.1-terra 12% more affordable for input. However, grok-4.20-beta may offer different capabilities or performance characteristics that justify the price difference.

### How does grok-4.20-beta pricing compare to the average chat model?

grok-4.20-beta input pricing is $1.25 per 1M tokens, which is 108% above the median of $0.60 for chat models. It ranks 2760 out of 4042 chat models by input cost, making it cheaper than 31% of models in this category. For output, it costs $2.50 per 1M tokens compared to the median of $1.80.

### What makes grok-4.20-beta different from other xAI models?

Among xAI's 36 chat models, grok-4.20-beta ranks 17 by input cost.

### What are the best alternatives to grok-4.20-beta?

The most comparable chat models to grok-4.20-beta are: gpt-6.1-terra from Azure ($1.10/1M input tokens); grok-4.3 from Azure ($1.25/1M input tokens); gemini-2.5-pro from Vertex AI ($1.25/1M input tokens); gemini-3.5-flash from Vertex AI ($1.50/1M 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 large is grok-4.20-beta's context window?

grok-4.20-beta supports up to 1,000,000 input tokens, placing it in the top 28% of chat models by context window size (rank 897 of 4003). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories.

### How do I calculate grok-4.20-beta costs?

grok-4.20-beta 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 $1.25 and generating 1M output tokens costs $2.50.

## Related Resources

- [Model library](https://www.getmaxim.ai/bifrost/model-library.md)
- [LLM cost calculator](https://www.getmaxim.ai/bifrost/llm-cost-calculator.md)
- [Docs: Bifrost docs](https://docs.getbifrost.ai)
- [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost)
- [Pricing: Bifrost pricing](https://www.getmaxim.ai/pricing.md)
- [Enterprise: Bifrost enterprise](https://www.getmaxim.ai/enterprise)
- [Book a Demo: Bifrost demo](https://www.getmaxim.ai/book-a-demo)
- [Resources: Bifrost resources](https://www.getmaxim.ai/resources.md)

---

*This is a markdown version of [https://www.getmaxim.ai/bifrost/model-library/compare/xai/grok-4.20-beta](https://www.getmaxim.ai/bifrost/model-library/compare/xai/grok-4.20-beta) for AI/LLM consumption.*