中/EN
Flash

Flash·Models & Products·2026-10-18 02:13

DeepSeek V4.1-Flash-1017 Released: Weights Reportedly Open Under MIT License, In-House Search API Launches

DeepSeek released V4.1-Flash-1017 on October 17, an updated snapshot of V4.1-Flash: the weights were reportedly published on Hugging Face under the MIT license; alongside new benchmark scores, the company opened its in-house search and fetch API.

HIMIAO Horizon·2026-10-18 02:13·1 min read

Listen Save Share card Copy link
DeepSeek V4.1-Flash-1017 cover: a bright data center hall with a whale emblem
Image: AI-generated

What happened

According to MarkTechPost's October 17 report, DeepSeek released V4.1-Flash-1017 that day, an updated snapshot of the V4.1-Flash series. Outlets including aiweekly report the snapshot's weights are now on Hugging Face under the MIT license (MarkTechPost's spec table lists the license as undisclosed; the Hugging Face model card is authoritative).

MarkTechPost reports DeepSeek's published benchmark scores: 77.0 on DeepSWE v1.1 (74.2 for the previous generation, 74.0 for Claude Opus 5) and 42.3 on Terminal-Bench 4.0 (31.2 previously). DeepSeek also opened its in-house Search/Fetch API at $0.75 per thousand calls; calls made inside DeepSeek Harness, Claude Code, and Codex are free until November 1.

Key facts

  1. Release date: October 17, 2026 (reported by MarkTechPost at 08:53 UTC)
  2. Weights license: Reportedly published on Hugging Face under the MIT license; some outlets list it as undisclosed — the model card is authoritative
  3. Benchmarks: 77.0 on DeepSWE v1.1 and 42.3 on Terminal-Bench 4.0, both figures published by DeepSeek
  4. Search API: In-house Search/Fetch API at $0.75 per thousand calls; free inside three coding tools until November 1
  5. Community buzz: A free-model plugin for DeepSeek Harness gained over 1,700 stars in a day on GitHub's October 17 trending list

Why it matters

DeepSeek opened its in-house search API ($0.75 per thousand calls) alongside the flagship snapshot weights: a single release covering both model weights and an agent search toolchain.
Useful Tap if this story helped you

CompaniesDeepSeek

SourcesMarkTechPost (Oct. 17, 2026, original); aiweekly (Oct. 17, 2026, original). This article is a compilation of public information and does not constitute investment advice.

From HIMIAO Horizon · himiao.ai

DEEPSEEKV4.1-FLASHOPEN WEIGHTS

Comments

  1. Loading comments…

Related

  1. Oct 8One Man, One AI Stack, Nine Banks: CrowdStrike Details the AI-Driven Korean Bank Hacks
  2. Oct 6DeepSeek Nears $12B Funding Round with Tencent and CATL, Doubling Its Original Target
  3. Oct 13DeepSeek to Lead Seed Round for Robotics Startup Winverse AI at ~$400M Valuation
  4. Oct 9UK's ICO Names 10 AI Labs in Training-Data Privacy Crackdown: "No Justification" for Non-Compliance
  5. Oct 6Moonshot AI Closes Final Private Round at ~$50B, Eyes $5B Hong Kong IPO in Q1 2027

Today

Oct 18 Sunday

Latest news

All →
  1. Oct 18Commerce Ministry Notice No. 48: 23 AI Technologies Proposed for Export Control List, Registration Required Before Export
  2. Oct 18Anthropic: Claude Mythos 5 Autonomously Designs Quantum Circuits, One Design's Gate Count Cut to 1/17
  3. Oct 18GitHub Copilot to Remove Three Flagship Models on November 16: Claude Opus 4.8/5 and GPT-5.6 Terra Retired
  4. Oct 17GitHub Weekly Vol.1: 8 Projects Worth Your Time
  5. Oct 17Microsoft's MAI-Base-2 Completes Pre-Training: 2T-Parameter All-MoE Architecture, Trained 38 Days on 16,000 GB200s
  6. Oct 17Meta Updates Commercial Terms: From October 30 It May Scrape Business Customers' Websites to Train AI, With No Opt-Out
Ask the cat