Open sourceOpen-source releaseEfficiency & Inference · Hardware & Compute6 sources · Oct 21, 2026

[AINews] DeepSeek DeepInfer: Open Source SOTA Inference running 155T toks/day/cluster making $22m/day at ~80% margin for a 81 day payback

It is day 1 of PyTorch Conf, and DeepSeek timed an intercontinental ballistic missile into the discussion by open sourcing DeepInfer, their production stack, capable of up to 72 hour prompt caching to the 12 hours OpenAI just announced:

ProofCode ↗4 independent outlets2 community threads

Key points

  • Proudly brought to you by SerpAPI: Today’s release covers a LOT of ground, but you can scrape all this into markdown for your agents!
  • Deepseek is open-sourcing DeepInfer, the inference framework behind its fast V4.1-Flash model.
  • DeepSeek has open-sourced DeepInfer, the inference framework that runs its production services.
  • Ltd. today open-sourced DeepInfer, the inference framework behind its own production services.

Sources (6)

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 20, 2026Do Diffusion LLMs Scale? Testing Mercury 3 + Decide
  2. Oct 19, 2026MiniMax M3.1 Flash shows China's AI price race has no floor in sight
  3. Oct 17, 2026[AINews] High Taste Testers Ep. 1
  4. Oct 17, 2026deepseek-ai/DeepSeek-V4.1-Flash-1017
  5. Oct 17, 2026Nemotron 3.5 Bolt, Muse Spark Open, and a Fast LFM2.5 24B
  6. Oct 16, 2026Hugging Face ❤️ TorchTPU: TPUs, Natively

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