--- title: "deepseek-v4.1-flash-fast - Model Details & Comparison" description: "deepseek-v4.1-flash-fast from Refuseless: capabilities, context limits, pricing, and side-by-side comparisons with alternative models." url: "https://www.getmaxim.ai/bifrost/model-library/compare/refuseless/deepseek-v4.1-flash-fast" markdown: "https://www.getmaxim.ai/bifrost/model-library/compare/refuseless/deepseek-v4.1-flash-fast.md" --- # deepseek-v4.1-flash-fast - Model Details & Comparison > deepseek-v4.1-flash-fast from Refuseless: 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 deepseek-v4.1-flash-fast deepseek-v4.1-flash-fast is a chat model from Refuseless, one of 5 chat models they offer. It is priced at $0.05 per 1M input tokens and $0.15 per 1M output tokens, ranking 180 out of 4042 chat models by cost and cheaper than 95% of models in this category. deepseek-v4.1-flash-fast supports function calling, reasoning, prompt caching, structured output. Its 1,049K-token context window is in the top 15% among chat models. ## Specifications - **Refuseless Provider.** - **Chat Mode.** - **1,048,576 Max Input Tokens.** - **262,144 Max Output Tokens.** - **$0.05 / 1M tokens Input Price.** - **$0.15 / 1M tokens Output Price.** ## Capabilities deepseek-v4.1-flash-fast supports: Function Calling, Reasoning, Prompt Caching, Response Schema, Tool Choice. ## deepseek-v4.1-flash-fast Pricing Overview At $0.05 per 1M input tokens and $0.15 per 1M output tokens, deepseek-v4.1-flash-fast ranks 180 out of 4042 chat models by input cost. It is more affordable compared to the median of $0.60 for chat models, and is cheaper than 95% of models in this category. deepseek-v4.1-flash-fast is one of 5 Refuseless chat models, with support for function calling, reasoning, prompt caching, structured output. its 1,049K-token context window places it in the top 15% of chat models. ## Models to Compare Alternatives to deepseek-v4.1-flash-fast with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | gpt-5-nano-2025-08-07 | Azure | $0.06 | $0.44 | | gpt-5-nano | Azure | $0.05 | $0.40 | | gpt-oss-120b | Sail | $0.06 | $0.40 | | Qwen3.6-35B-A3B | Sail | $0.05 | $0.40 | | gpt-5-nano | OpenAI | $0.05 | $0.40 | - [Compare gpt-5-nano-2025-08-07](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5-nano-2025-08-07.md) - [Compare gpt-5-nano](https://www.getmaxim.ai/bifrost/model-library/compare/azure/gpt-5-nano.md) - [Compare gpt-5-nano](https://www.getmaxim.ai/bifrost/model-library/compare/openai/gpt-5-nano.md) ## Related Resources - [Calculate deepseek-v4.1-flash-fast costs](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/refuseless/model/deepseek-v4.1-flash-fast.md) - [All Refuseless pricing](https://www.getmaxim.ai/bifrost/llm-cost-calculator/provider/refuseless.md) ## FAQ ### Is deepseek-v4.1-flash-fast cheaper than gpt-5-nano-2025-08-07? Yes. deepseek-v4.1-flash-fast costs $0.05 per 1M input tokens compared to gpt-5-nano-2025-08-07's $0.06 per 1M input tokens, making it 10% more affordable. Both are chat models and share support for vision, function calling, reasoning, prompt caching, structured output. ### How does deepseek-v4.1-flash-fast pricing compare to the average chat model? deepseek-v4.1-flash-fast input pricing is $0.05 per 1M tokens, which is 92% below the median of $0.60 for chat models. It ranks 180 out of 4042 chat models by input cost, making it cheaper than 95% of models in this category. For output, it costs $0.15 per 1M tokens compared to the median of $1.80. ### What makes deepseek-v4.1-flash-fast different from other Refuseless models? Among Refuseless's 5 chat models, deepseek-v4.1-flash-fast ranks 1 by input cost. ### What are the best alternatives to deepseek-v4.1-flash-fast? The most comparable chat models to deepseek-v4.1-flash-fast are: gpt-5-nano-2025-08-07 from Azure ($0.06/1M input tokens); gpt-5-nano from Azure ($0.05/1M input tokens); gpt-oss-120b from Sail ($0.06/1M input tokens); Qwen3.6-35B-A3B from Sail ($0.05/1M 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 deepseek-v4.1-flash-fast's context window? deepseek-v4.1-flash-fast supports up to 1,048,576 input tokens, placing it in the top 15% of chat models by context window size (rank 396 of 4003). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I calculate deepseek-v4.1-flash-fast costs? deepseek-v4.1-flash-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 $0.05 and generating 1M output tokens costs $0.15. ## 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/refuseless/deepseek-v4.1-flash-fast](https://www.getmaxim.ai/bifrost/model-library/compare/refuseless/deepseek-v4.1-flash-fast) for AI/LLM consumption.*