{"article":{"slug":"moonshot-kimi-k3-1-pro-launch","kind":"model","source":{"title":"Introducing Kimi K3.1 Pro","url":"https://www.kimi.ai/blog/kimi-k3-1-pro","date":"2026-10-23"},"headline":"Kimi K3.1 Pro costs $2 and $10 per million tokens, with weights promised by Nov 4","whatChanged":"Moonshot AI released Kimi K3.1 Pro on October 23 through Kimi.ai, Kimi Work, Kimi Code and the Kimi API, with a 1 million token context window. API pricing is $2 per million input tokens, $10 per million output tokens and $0.20 for cached input, one-third below the $3 and $15 Moonshot lists for Kimi K3. A Highspeed variant, which Moonshot says is 2 to 3 times faster, costs $4 and $20. Moonshot promises full model weights by November 4. They are not out yet, and Artificial Analysis currently labels the model proprietary.\n\nMoonshot's chart compares it with Claude Opus 5.5, GPT-6 Astra and Claude Fable 5.1. On Terminal-Bench 4.0 Kimi scores 65.7 against 66.4 for Opus 5.5 and 58.2 for Astra. It leads on SWE Marathon (51.7 against 46.3 for Opus 5.5) and OfficeQA Pro v2 (64.4 against 62.2). It trails on Terminal-Bench Science 0.1 (38.1 against 68.1 for Astra) and Frontier Finance (58.6 against 60.8 for Fable 5.1). Moonshot ran Kimi at maximum reasoning effort and took rival scores from their blogs or public leaderboards.\n\nArtificial Analysis, an independent tester, scores Kimi 55 on its Intelligence Index at $2.11 per index task. The model produced 150 million output tokens on the index against a median of 81 million for similar models, at 46.3 tokens per second against a median of 87 for similarly priced models.","whyItMatters":"The token price is only part of the cost of a task. Artificial Analysis measured 150 million output tokens for its index against a median of 81 million, and a speed of 46.3 tokens per second. A job billed at $10 per million output tokens can cost more and run slower than the rate card suggests.\n\nMoonshot's scores are vendor-run, and the chart mixes its own harness with rivals' published numbers. Several rows differ by 2 points or less. Weights are promised but not released, so self-hosting is a plan and not an option today. Run one recurring task of your own and compare cost per finished task.","issuer":"Moonshot AI","glance":"Moonshot released Kimi K3.1 Pro October 23 at $2 in and $10 out per million tokens; open weights are promised by November 4.","keyFact":"$2 in, $10 out per 1M tokens; weights by Nov 4","action":"Run one recurring task on Kimi K3.1 Pro and compare cost per finished task with your current model.","visuals":[{"url":"https://kimi-img.kimi.ai/pub/slides/kimi-fs/managed-assets/6f2d669b-c9e2-4579-bf7c-26a0b78ced74.webp","alt":"Grid of horizontal bar charts comparing Kimi K3.1 Pro with Claude Opus 5.5, Claude Fable 5.1, GPT-6 Astra, DeepSeek-V4.1-Flash-1017 and GLM-5.3. Kimi leads SWE Marathon and OfficeQA Pro v2 and trails on Terminal-Bench Science 0.1.","caption":"Moonshot's benchmark grid, October 23. Terminal-Bench 4.0: Opus 5.5 66.4, Kimi 65.7, GPT-6 Astra 58.2. SWE Marathon: Kimi 51.7, Opus 5.5 46.3. OfficeQA Pro v2: Kimi 64.4, Opus 5.5 62.2. Frontier Finance: Fable 5.1 60.8, Kimi 58.6. Terminal-Bench Science 0.1: Astra 68.1, Kimi 38.1. Vendor-run at maximum reasoning effort; rival scores are Moonshot's picks from their blogs or leaderboards, and the grid includes Moonshot's own Kimi Code Bench. Rows differ in units, so scores should not be combined.","credit":"Moonshot AI","source":{"title":"Introducing Kimi K3.1 Pro","url":"https://www.kimi.ai/blog/kimi-k3-1-pro","date":"2026-10-23"}}],"attachments":[{"title":"Kimi K3.1 Pro pricing, standard and Highspeed","url":"https://www.kimi.ai/resources/kimi-k3-1-pro-pricing","description":"Per-token rates for kimi-k3.1-pro and the Highspeed model, cache-write prices, the flat rate across the 1,048,576-token window, and the list prices for Kimi K3.","source":{"title":"Introducing Kimi K3.1 Pro","url":"https://www.kimi.ai/blog/kimi-k3-1-pro","date":"2026-10-23"}}],"companyLabel":"Public edition"},"issue":{"id":"2026-10-26","publishedLabel":"Week of October 26, 2026","isLatest":true},"position":{"index":1,"total":4},"next":{"slug":"openai-decisions-api-general-availability","headline":"OpenAI charges $0.10 per million input tokens and nothing for output on Decisions"},"session":null}