--- title: "grok-4.5 - Model Details & Comparison" description: "grok-4.5 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-4.5" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-4.5.md" --- # grok-4.5 - Model Details & Comparison > grok-4.5 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-4.5 grok-4.5 is a chat model from xAI, one of 41 chat models they offer. It is priced at $2.00 per 1M input tokens and $6.00 per 1M output tokens, ranking 2115 out of 2669 chat models by cost and cheaper than 20% of models in this category. grok-4.5 supports vision, function calling, reasoning, web search, prompt caching, structured output. Its 500K-token context window is in the top 16% among chat models. ## Specifications - **xAI Provider.** - **Chat Mode.** - **500,000 Max Input Tokens.** - **500,000 Max Output Tokens.** - **500,000 Max Tokens.** - **$2.00 / 1M tokens Input Price.** - **$6.00 / 1M tokens Output Price.** ## Capabilities grok-4.5 supports: Function Calling, Vision, Reasoning, Web Search, Prompt Caching, Response Schema, Tool Choice. ## grok-4.5 Pricing Overview At $2.00 per 1M input tokens and $6.00 per 1M output tokens, grok-4.5 ranks 2115 out of 2669 chat models by input cost. It is more expensive compared to the median of $0.50 for chat models, and is cheaper than 20% of models in this category. grok-4.5 is one of 41 xAI chat models, with support for vision, function calling, reasoning, web search, prompt caching, structured output. its 500K-token context window places it in the top 16% of chat models. ## Models to Compare Alternatives to grok-4.5 with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | claude-sonnet-5 | Anthropic | $2.00 | $10.00 | | gemini-3-pro-preview | Vertex AI | $2.00 | $12.00 | | gemini-3.1-pro-preview | Vertex AI | $2.00 | $12.00 | | gemini-3.1-pro-preview-customtools | Vertex AI | $2.00 | $12.00 | | gemini-3-pro-preview | Google Gemini | $2.00 | $12.00 | - [Compare claude-sonnet-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-5.md) - [Compare gemini-3-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3-pro-preview.md) - [Compare gemini-3.1-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-pro-preview.md) - [Compare gemini-3.1-pro-preview-customtools](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-pro-preview-customtools.md) - [Compare gemini-3-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3-pro-preview.md) ## Related Resources - [Calculate grok-4.5 costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/xai/model/grok-4.5.md) - [All xAI pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/xai.md) ## FAQ ### Is grok-4.5 cheaper than claude-sonnet-5? No. grok-4.5 costs $2.00 per 1M input tokens while claude-sonnet-5 costs $2.00 per 1M input tokens, making claude-sonnet-5 0% more affordable for input. However, grok-4.5 may offer different capabilities or performance characteristics that justify the price difference. ### How does grok-4.5 pricing compare to the average chat model? grok-4.5 input pricing is $2.00 per 1M tokens, which is 300% above the median of $0.50 for chat models. It ranks 2115 out of 2669 chat models by input cost, making it cheaper than 20% of models in this category. For output, it costs $6.00 per 1M tokens compared to the median of $1.44. ### What makes grok-4.5 different from other xAI models? Among xAI's 41 chat models, grok-4.5 ranks 21 by input cost. ### What are the best alternatives to grok-4.5? The most comparable chat models to grok-4.5 are: claude-sonnet-5 from Anthropic ($2.00/1M input tokens); gemini-3-pro-preview from Vertex AI ($2.00/1M input tokens); gemini-3.1-pro-preview from Vertex AI ($2.00/1M input tokens); gemini-3.1-pro-preview-customtools from Vertex AI ($2.00/1M 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-4.5's context window? grok-4.5 supports up to 500,000 input tokens, placing it in the top 16% of chat models by context window size (rank 419 of 2653). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I calculate grok-4.5 costs? grok-4.5 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 $2.00 and generating 1M output tokens costs $6.00. ## 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-4.5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/xai/grok-4.5) for AI/LLM consumption.*