{"version":1,"type":"story","url":"https://digestai.news/story/moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig","json":"https://digestai.news/story/moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig.json","markdown":"https://digestai.news/story/moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig.md","slug":"moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig","headline":"Moonshot AI releases Kimi K3.1 Pro with 1M-token context and open weights by Nov 4","summary":"Moonshot AI launched Kimi K3.1 Pro on October 24, 2026, the first model in its new K3.1 series, alongside a faster variant called Kimi K3.1 Pro Highspeed. The company describes K3.1 Pro as its most capable 3T-class open-weight model to date, featuring a 1-million-token context window. Both models are available across the Kimi product family: on Kimi.ai, mobile apps for iOS, Android, and HarmonyOS, the Kimi Work desktop application (version 3.1.0+), Kimi Code, and the Kimi API with Zero Data Retention for API customers. Enterprise administrators can enable K3.1 Pro for organizations, with access off by default at launch.\n\nMoonshot AI reports that K3.1 Pro scored 65.7% on Terminal-Bench 4.0, ahead of GPT-6 Astra at 58.2% and narrowly behind Claude Opus 5.5 at 66.4%. On Kimi Code Bench 3.0 Long-horizon, it scored 61.2% versus K3's 55.95%. On BenchCAD for 3D reconstruction, it reached 92.7% with tools, approaching Claude Opus 5.5 at 96.2% and GPT-6 Astra at 95.9%. The company also reports a state-of-the-art 64.4 on OfficeQA Pro v2 for fiscal data analysis, and a reduction in claim-level hallucination rate from 23.4% for K3 to 8.3% on its internal Kimi Hallu Bench Hard. A 3D Make feature is live on kimi.ai and the Kimi app for previewing, editing, and downloading 3D models for printing.\n\nFor the open-weight release, Moonshot AI said it identified and removed cyber-related data from training while retaining general-purpose coding tasks. On xdev-bench-hard, a checkpoint without risk-reduction measures solved 90.5% of problems at pass@3, while the final K3.1 Pro reaches 81.0%. The company states that K3.1 Pro's cyber capability remains behind frontier proprietary models available for at least three months. Full model weights for Kimi K3.1 Pro will be released by November 4, 2026.","keyPoints":["Kimi K3.1 Pro and Highspeed variant launched with 1M-token context window","Moonshot AI reports 65.7% on Terminal-Bench 4.0, ahead of GPT-6 Astra at 58.2%","Full open-weight release scheduled by November 4, 2026"],"whyItMatters":"A 3T-class open-weight model with 1M context and reported coding benchmarks near proprietary leaders expands options for developers and enterprises seeking transparent, auditable models.","category":{"slug":"models","name":"Generative AI & Models","url":"https://digestai.news/category/models"},"entities":{"companies":["Moonshot AI"],"models":["Kimi K3.1 Pro","Kimi K3.1 Pro Highspeed","Kimi K3","GPT-6 Astra","Claude Opus 5.5"],"people":[]},"firstPublishedAt":"2026-10-23T17:26:02Z","updatedAt":"2026-10-23T19:00:07Z","sourceCount":2,"hasPrimarySource":false,"sources":[{"outlet":"Unite.AI","title":"Moonshot AI Releases Kimi K3.1 Pro, First Model in New K3.1 Series","url":"https://unite.ai/moonshot-ai-releases-kimi-k3-1-pro-first-model-in-new-k3-1-series","publishedAt":"2026-10-23T17:26:02Z","type":"press","primary":false,"lead":true},{"outlet":"The Decoder","title":"Chinese AI model Kimi K3.1 Pro is closing in on Anthropic's Claude Opus 5.5","url":"https://the-decoder.com/chinese-ai-model-kimi-k3-1-pro-is-closing-in-on-anthropics-claude-opus-5-5","publishedAt":"2026-10-23T19:00:07Z","type":"press","primary":false,"lead":false}],"sourceNotes":null,"discussions":[],"thread":null,"cite":{"text":"Digest AI, \"Moonshot AI releases Kimi K3.1 Pro with 1M-token context and open weights by Nov 4\", 23 October 2026, https://digestai.news/story/moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig","publisher":"Digest AI","title":"Moonshot AI releases Kimi K3.1 Pro with 1M-token context and open weights by Nov 4","datePublished":"2026-10-23T17:26:02Z","url":"https://digestai.news/story/moonshot-ai-releases-kimi-k3-1-pro-with-1m-token-context-and-open-weig"},"generatedBy":"Written by Digest AI's editorial model from the linked sources; the sources are the record.","license":"Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse"}