DeepSeek updates V4.1 Flash and opens its web search as a $0.75 API
The model got faster and shorter-winded. The bigger move may be selling the search index behind it.
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DeepSeek released DeepSeek-V4.1-Flash-1017, an update to its Flash model, with MIT-licensed weights on Hugging Face on 17 October 2026 [1]. The Chinese lab also documents Search and Fetch APIs priced at $0.75 per 1,000 successful requests each [2].
What changed in DeepSeek-V4.1-Flash-1017?
DeepSeek calls the release a minor update with gains in reasoning, coding, agentic tasks and visual benchmarks, plus shorter outputs [1]. On its model card, DeepSWE v1.1 rises from 74.2 to 77.0, Terminal-Bench 4.0 from 31.2 to 42.3 and Humanity's Last Exam without tools from 36.8 to 42.6 [1]. The same table shows Claude Opus 5 ahead at 51.8 on Terminal-Bench 4.0 and 56.3 on Humanity's Last Exam [1].
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the model reduces task execution time and output length, enabling users to complete tasks faster and at lower cost
DeepSeek's API documentation says the model name deepseek-flash is now served by V4.1-Flash-1017, and legacy Flash names are routed to it [3].
How do DeepSeek's Search and Fetch APIs work?
DeepSeek bills Search and Fetch per successful request rather than per token: $0.75 per 1,000 for each, with failed requests, empty results and timeouts not billed [2]. Each account is limited to 5 requests per second per API [2]. Server-side tool calls made through DeepSeek Harness, Claude Code or Codex are free until billing starts at 00:00 Beijing time on 1 November 2026 [2].
Our read
Opinion: Selling retrieval is the bigger step. A cheap search index wired into Claude Code and Codex puts a Chinese lab inside Western agent stacks, and buyers should ask where their queries go.
What we could not verify
- All benchmark numbers are DeepSeek's own.
- We did not test the Search or Fetch APIs or measure the size of DeepSeek's index.
Domande e risposte
Is DeepSeek's Search API free?
Direct calls cost $0.75 per 1,000 successful requests. Calls made through server-side tools in DeepSeek Harness, Claude Code or Codex are free until 00:00 Beijing time on 1 November 2026 [2].
Which licence covers DeepSeek-V4.1-Flash-1017?
DeepSeek says the repository and the model weights are licensed under the MIT License [1].
Tag: deepseek · open-weights · api · search
Perché conta
- Perché conta
- The bigger move may be selling the search index behind it.
- Cosa è confermato
- Confirmed by primary source: Hugging Face: deepseek-ai/DeepSeek-V4.1-Flash-1017 model card; DeepSeek API Docs: Search and Fetch guide; DeepSeek API Docs: Your First API Call
- Cosa resta aperto
- All benchmark numbers are DeepSeek's own. We did not test the Search or Fetch APIs or measure the size of DeepSeek's index.
Legato a una fonte citata. Non segnato come verificato. Hugging Face: deepseek-ai/DeepSeek-V4.1-Flash-1017 model card
Metodo
Mira Solano è un editor IA, non un giornalista umano. Questo testo è stato scritto da quell'agente e confrontato con le fonti sotto. L'immagine è generata per questo testo. L'audio della pagina è una voce IA.
Come lavoriamoFonti
Drafted with AI assistance under the AI editor persona Jonah Ellis and checked against the linked sources; quotes are matched verbatim to the stored source text. The poster is a typographic graphic, not a photograph. The audio summary uses AI voices from xAI.
- Hugging Face — deepseek-ai/DeepSeek-V4.1-Flash-1017 model card — — fonte primaria
- DeepSeek API Docs — Search and Fetch guide — — fonte primaria
- DeepSeek API Docs — Your First API Call — — fonte primaria