{"slug": "the-fastest-deepseek-v4-1-flash-1017-day-0", "title": "The fastest DeepSeek v4.1 flash 1017 – Day 0", "summary": "RunInfra has listed DeepSeek V4.1 Flash 1017 (deepseek-ai/DeepSeek-V4.1-Flash-1017) in its Model APIs, serving the model at $0.15 per 1M input tokens, $0.01 per 1M cached input tokens and $0.60 per 1M output tokens. The listing specifies a 1,048,576-token context window, a 3.5 MB maximum request size, text and image input, tool calling, JSON mode and streaming, with OpenAI-compatible chat completions and Anthropic-compatible Messages via POST /v1/messages. RunInfra states zero data retention by default and that customer data is never used for training, with automatic prefix caching billed at the cached input rate.", "body_md": "# DeepSeek V4.1 Flash 1017\n\n`deepseek-ai/DeepSeek-V4.1-Flash-1017`\nDeepSeek V4.1 Flash 1017 is an LLM listed in RunInfra Model APIs. RunInfra serves it as deepseek-ai/DeepSeek-V4.1-Flash-1017 at $0.15 per 1M input tokens and $0.60 per 1M output tokens. Its context window is 1,048,576 tokens. The API provides OpenAI-compatible chat completions and Anthropic-compatible Messages, POST /v1/messages.\n\n## Pricing\n\nUSD, pay per token\n\n- per 1M input tokens\n- $0.15\n- per 1M cached input tokens\n- $0.01\n- per 1M output tokens\n- $0.60\n\n## Measured performance\n\n## Access\n\nConfirm how your client reaches this model.\n\n- Provider\n- DeepSeek\n- API compatibility\n- OpenAI-compatible chat completions\n- Anthropic compatibility\n- Anthropic-compatible Messages, POST /v1/messages\n- Accepted input\n- Text and images\n- Availability\n- Available\n- Data retention\n- [Zero data retention by default. Never used for training.](https://runinfra.ai/docs/security/data-retention)\n\n## Capacity\n\nCheck the limits your workload must fit.\n\n- Context window\n- 1,048,576 tokens\n- Maximum request size\n- 3.5 MB per request\n- Maximum generated output\n- 1,048,576 tokens\n\n## Capabilities\n\nSee which request modes the API supports.\n\n- Tool calling\n- Supported\n- JSON mode\n- Supported\n- Streaming\n- Supported\n\n## View full spec\n\n- Gateway compatibility\n- OpenAI- and Anthropic-compatible APIs for compatible clients, tools, and gateways\n- Prefix caching\n- Automatic prefix caching runs on every replica, and requests from the same session or conversation are routed back to the replica that holds their cached prefix. A stable session hint or prompt_cache_key provides explicit grouping; otherwise RunInfra derives it from the start of the conversation or, failing that, the workspace. Hits remain best effort until eviction or a serve restart, never guaranteed. Cached input is billed at the cached input rate. Responses report cached token counts.\n- Cache retention\n- Prefix cache is held on the serving GPU and evicted under memory pressure. Retention is best effort.\n- Upstream model\n- [View model](https://huggingface.co/deepseek-ai/DeepSeek-V4.1-Flash-1017)", "url": "https://wpnews.pro/news/the-fastest-deepseek-v4-1-flash-1017-day-0", "canonical_source": "https://runinfra.ai/inference-api/deepseek-v4-1-flash-1017", "published_at": "2026-10-17 11:07:08+00:00", "updated_at": "2026-10-17 11:32:53.343207+00:00", "lang": "en", "topics": ["large-language-models", "ai-infrastructure", "ai-products", "ai-tools"], "entities": ["DeepSeek", "DeepSeek V4.1 Flash 1017", "RunInfra"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/the-fastest-deepseek-v4-1-flash-1017-day-0", "markdown": "https://wpnews.pro/news/the-fastest-deepseek-v4-1-flash-1017-day-0.md", "text": "https://wpnews.pro/news/the-fastest-deepseek-v4-1-flash-1017-day-0.txt", "jsonld": "https://wpnews.pro/news/the-fastest-deepseek-v4-1-flash-1017-day-0.jsonld"}}