References 688% CONFIDENCEOverall confidence: 88%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]90%
  deepseek.com/en/news/v4-preview

  deepseek.com· Posted Oct 12, 2026· Starts Apr 24, 2026 ✓· 18% of score

  DeepSeek's^[3][5] news post is dated April 24, 2026 and opens "DeepSeek-V4 Preview is officially live & open-sourced"; its API changelog entry for 2026-04-24 says "The DeepSeek API now supports V4-Pro and V4-Flash", and OpenRouter listed both models the same day.

• [2]90%
  deepseek-ai/DeepSeek-V4-Pro - Hugging Face

  huggingface.co· Added Oct 12, 2026· 18% of score

  DeepSeek's^[1][3][5] model card: V4-Pro 1.6T parameters (49B activated) and V4-Flash 284B (13B), 1M-token context, MIT license, a hybrid of Compressed Sparse and Heavily Compressed Attention that needs 27% of V3.2's single-token FLOPs and 10% of its KV cache at 1M tokens, 32T+ pre-training tokens and the Pro-Max benchmark tables.

• [3]90%
  Change Log - DeepSeek API Docs

  api-docs.deepseek.com· Added Oct 12, 2026· 18% of score

  DeepSeek's^[1][5] own changelog: 2026-04-24 V4 launch with deepseek-chat and deepseek-reasoner routed to V4-Flash until 2026-07-24, then the 31 July V4-Flash update, the 13 August V4-Pro GA with low/high/max thinking effort and peak/off-peak pricing from 16 August, and V4.1-Flash on 10 September.

• [4]85%
  DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence - arXiv

  arxiv.org· Added Oct 12, 2026· 18% of score

  The V4 technical report (DeepSeek^[1][3][5]-AI, 319 authors): hybrid attention, manifold-constrained hyper-connections and the Muon optimizer, over 32T pre-training tokens, and the claim that V4-Pro-Max redefines the state of the art for open models.

• [5]90%
  Models & Pricing - DeepSeek API Docs

  api-docs.deepseek.com· Added Oct 12, 2026· 18% of score

  DeepSeek's^[1][3] current price table: V4-Pro-0813 at $0.66 off-peak and $1.32 peak per million cache-miss input tokens and $1.98 / $3.96 output, 1M context and 384K maximum output; shows how far the launch prices have since moved.

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