--- title: "grok-4.5 - Model Details & Comparison" description: "grok-4.5 from OpenRouter: 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/openrouter/grok-4.5" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/grok-4.5.md" --- # grok-4.5 - Model Details & Comparison > grok-4.5 from OpenRouter: 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 OpenRouter, one of 357 chat models they offer. It is priced at $2.00 per 1M input tokens and $6.00 per 1M output tokens, ranking 2120 out of 2669 chat models by cost and cheaper than 20% of models in this category. grok-4.5 supports vision, function calling, reasoning, prompt caching, structured output. Its 500K-token context window is in the top 16% among chat models. ## Specifications - **OpenRouter Provider.** - **Chat Mode.** - **500,000 Max Input 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, Prompt Caching, Response Schema, Tool Choice, PDF Input. ## grok-4.5 Pricing Overview At $2.00 per 1M input tokens and $6.00 per 1M output tokens, grok-4.5 ranks 2120 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 357 OpenRouter chat models, with support for vision, function calling, reasoning, 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 | | --- | --- | --- | --- | | amazon.nova-2-pro-preview-20251202-v1:0 | AWS Bedrock | $2.19 | $17.50 | | apac.amazon.nova-2-pro-preview-20251202-v1:0 | AWS Bedrock | $2.19 | $17.50 | | eu.amazon.nova-2-pro-preview-20251202-v1:0 | AWS Bedrock | $2.19 | $17.50 | | us.amazon.nova-2-pro-preview-20251202-v1:0 | AWS Bedrock | $2.19 | $17.50 | | anthropic.claude-sonnet-5 | AWS Bedrock | $2.00 | $10.00 | - [Compare amazon.nova-2-pro-preview-20251202-v1:0](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/amazon.nova-2-pro-preview-20251202-v1-0.md) - [Compare apac.amazon.nova-2-pro-preview-20251202-v1:0](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/apac.amazon.nova-2-pro-preview-20251202-v1-0.md) - [Compare eu.amazon.nova-2-pro-preview-20251202-v1:0](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/eu.amazon.nova-2-pro-preview-20251202-v1-0.md) - [Compare us.amazon.nova-2-pro-preview-20251202-v1:0](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/us.amazon.nova-2-pro-preview-20251202-v1-0.md) - [Compare anthropic.claude-sonnet-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/anthropic.claude-sonnet-5.md) ## Related Resources - [Calculate grok-4.5 costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter/model/grok-4.5.md) - [Check OpenRouter status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/openrouter.md) - [All OpenRouter pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter.md) ## FAQ ### Is grok-4.5 cheaper than amazon.nova-2-pro-preview-20251202-v1:0? Yes. grok-4.5 costs $2.00 per 1M input tokens compared to amazon.nova-2-pro-preview-20251202-v1:0's $2.19 per 1M input tokens, making it 9% more affordable. Both are chat models and share support for vision, function calling, reasoning, prompt caching, structured output. ### 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 2120 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 OpenRouter models? Among OpenRouter's 357 chat models, grok-4.5 ranks 273 by input cost. ### What are the best alternatives to grok-4.5? The most comparable chat models to grok-4.5 are: amazon.nova-2-pro-preview-20251202-v1:0 from AWS Bedrock ($2.19/1M input tokens); apac.amazon.nova-2-pro-preview-20251202-v1:0 from AWS Bedrock ($2.19/1M input tokens); eu.amazon.nova-2-pro-preview-20251202-v1:0 from AWS Bedrock ($2.19/1M input tokens); us.amazon.nova-2-pro-preview-20251202-v1:0 from AWS Bedrock ($2.19/1M 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 421 of 2653). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I check if OpenRouter is down? You can monitor OpenRouter service health in real time on the Bifrost OpenRouter 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-4.5 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 - [OpenRouter models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/openrouter.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/openrouter/grok-4.5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/grok-4.5) for AI/LLM consumption.*