--- title: "claude-opus-5-fast - Model Details & Comparison" description: "claude-opus-5-fast 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/claude-opus-5-fast" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/claude-opus-5-fast.md" --- # claude-opus-5-fast - Model Details & Comparison > claude-opus-5-fast 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 claude-opus-5-fast claude-opus-5-fast is a chat model from OpenRouter, one of 357 chat models they offer. It is priced at $10.00 per 1M input tokens and $50.00 per 1M output tokens, ranking 2577 out of 2669 chat models by cost and cheaper than 3% of models in this category. claude-opus-5-fast supports vision, function calling, reasoning, prompt caching, structured output. Its 1,000K-token context window is in the top 15% among chat models. ## Specifications - **OpenRouter Provider.** - **Chat Mode.** - **1,000,000 Max Input Tokens.** - **128,000 Max Output Tokens.** - **128,000 Max Tokens.** - **$10.00 / 1M tokens Input Price.** - **$50.00 / 1M tokens Output Price.** ## Capabilities claude-opus-5-fast supports: Function Calling, Vision, Reasoning, Prompt Caching, Response Schema, Tool Choice, PDF Input. ## claude-opus-5-fast Pricing Overview At $10.00 per 1M input tokens and $50.00 per 1M output tokens, claude-opus-5-fast ranks 2577 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 3% of models in this category. claude-opus-5-fast is one of 357 OpenRouter chat models, with support for vision, function calling, reasoning, prompt caching, structured output. its 1,000K-token context window places it in the top 15% of chat models. ## Models to Compare Alternatives to claude-opus-5-fast with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | anthropic.claude-fable-5 | AWS Bedrock | $10.00 | $50.00 | | global.anthropic.claude-fable-5 | AWS Bedrock | $10.00 | $50.00 | | us.anthropic.claude-fable-5 | AWS Bedrock | $11.00 | $55.00 | | eu.anthropic.claude-fable-5 | AWS Bedrock | $11.00 | $55.00 | | claude-fable-5 | Azure | $10.00 | $50.00 | - [Compare anthropic.claude-fable-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/anthropic.claude-fable-5.md) - [Compare global.anthropic.claude-fable-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/global.anthropic.claude-fable-5.md) - [Compare us.anthropic.claude-fable-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/us.anthropic.claude-fable-5.md) - [Compare eu.anthropic.claude-fable-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/bedrock/eu.anthropic.claude-fable-5.md) - [Compare claude-fable-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/claude-fable-5.md) ## Related Resources - [Calculate claude-opus-5-fast costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter/model/claude-opus-5-fast.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 claude-opus-5-fast cheaper than anthropic.claude-fable-5? No. claude-opus-5-fast costs $10.00 per 1M input tokens while anthropic.claude-fable-5 costs $10.00 per 1M input tokens, making anthropic.claude-fable-5 0% more affordable for input. However, claude-opus-5-fast may offer different capabilities or performance characteristics that justify the price difference. ### How does claude-opus-5-fast pricing compare to the average chat model? claude-opus-5-fast input pricing is $10.00 per 1M tokens, which is 1900% above the median of $0.50 for chat models. It ranks 2577 out of 2669 chat models by input cost, making it cheaper than 3% of models in this category. For output, it costs $50.00 per 1M tokens compared to the median of $1.44. ### What makes claude-opus-5-fast different from other OpenRouter models? Among OpenRouter's 357 chat models, claude-opus-5-fast ranks 329 by input cost. ### What are the best alternatives to claude-opus-5-fast? The most comparable chat models to claude-opus-5-fast are: anthropic.claude-fable-5 from AWS Bedrock ($10.00/1M input tokens); global.anthropic.claude-fable-5 from AWS Bedrock ($10.00/1M input tokens); us.anthropic.claude-fable-5 from AWS Bedrock ($11.00/1M input tokens); eu.anthropic.claude-fable-5 from AWS Bedrock ($11.00/1M 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 claude-opus-5-fast's context window? claude-opus-5-fast supports up to 1,000,000 input tokens, placing it in the top 15% of chat models by context window size (rank 358 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 claude-opus-5-fast costs? claude-opus-5-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 $10.00 and generating 1M output tokens costs $50.00. ## 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/claude-opus-5-fast](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/claude-opus-5-fast) for AI/LLM consumption.*