Kimi K3.1: From Rumors to Official Teaser

Episode 1 · Kimi K3.1 leak wave intensifies as launch appears imminent (2026-10-22, 15 posts)

From October 22 to 23, leaks about Moonshot AI's next-generation model Kimi K3.1 came thick and fast: multiple X users claimed the model is about to launch, with 3D rendering and agentic coding capabilities as headline features, and that it may be a low-cost open-source SOTA. Moonshot AI has not yet issued an official announcement, so all details remain unverified rumors.

Confirmed

• A "Kimi K3.1 Pro tech blog" entry briefly appeared in the Research section of the Kimi website before apparently being taken down (site screenshots exist)—the closest thing to an official signal, though the meaning of the "Pro" naming is unknown
• A user posted a screenshot of the Kimi Code 2.2.0 launch interface showing K3.1 in the Model field, with the directory path /Users/moonshot, suggesting internal testing of the model (the screenshot itself is not officially verified)
• Some bloggers noticed signals that appear to be teasers from Kimi's official account

Not yet confirmed

• Timing claims vary: ChrisGPT first said "not today, Friday or Monday," then mentioned "before next Tuesday"; ChrisUniverse said it would launch within 24 hours; teortaxesTex said release was only minutes away
• Capability rumors all come from third parties: Bindu Reddy claimed K3.1 excels at 3D rendering, is "exceptional" at agentic coding, is touted as Opus-level but cheaper, and predicted it would surpass Argon, ranking just behind OpenAI and Astra (community members also compared it to Fable 5.5, and Beff Jezos quipped in a repost about Chinese LLM labs competing for "aesthetic vibes SOTA")
• ChrisGPT said K3.1's codename is Kibitz, that it has already appeared on LMArena, and that its Minecraft test cost was only 7% of GPT's
• teortaxesTex mentioned the model is 3T parameters, trained with roughly 3 months of RL, and sees it as a make-or-break moment for Kimi
• TheZachMueller, citing a leak from Andrew Curran, said the next release is directly K3.1 rather than the previously rumored Kimi Flash

Why it matters

If the rumors hold true, K3.1 would be the open-source camp's latest attempt to rival top closed-source flagships, and its "low cost + Opus-level capability" positioning could reshape model choices for agent coding scenarios. The brief appearance of the official blog page and the internal testing interface screenshots suggest a launch is very close—watch for Moonshot AI's official announcement to verify the leaks.

• Kimi K3.1 Rumored to Launch Before Tuesday as Cheap Open-Source SOTA Model — zephyr_z9 · 2026-10-22
• Rumor: Kimi K3.1 won't drop today, expected Friday or Monday — ChrisGPT · 2026-10-23
• Kimi K3.1 rumored to be imminent as Moonshot drops a teaser signal — iamfakhrealam · 2026-10-23
• Kimi K3.1 Rumored to Launch Within ~24 Hours — ChrisUniverse · 2026-10-23
• Moonshot reportedly preparing to launch Kimi K3.1, per unverified leak — beffjezos · 2026-10-23
• Leaked Kimi Code screenshot shows unreleased Kimi K3.1 model in internal testing — airesearch12 · 2026-10-23
• Kimi K3.1 launch imminent: 3T-param bet on RL seen as make-or-break — teortaxesTex · 2026-10-23
• Kimi K3.1 reportedly arriving soon, dashing hopes for a Kimi Flash — TheZachMueller · 2026-10-23
• Kimi site briefly showed a K3.1 Pro tech blog page, fueling 'Pro' tier speculation — zephyr_z9 · 2026-10-23
• Kimi K3.1 rumored to excel at 3D renders, predicted to trail only Anthropic and OpenAI — bindureddy · 2026-10-23
• Kimi K3.1 rumored to drop soon: Opus-class agentic coding at much lower cost — bindureddy · 2026-10-23
• Rumor: Kimi K3.1 imminent, tipped to excel at 3D rendering — bindureddy · 2026-10-23
• Rumor: Kimi K3.1 launch imminent, tipped to be the best open-weight model yet — kimmonismus · 2026-10-23
• Kimi K3.1 rumored to drop imminently, screenshot shows it live in Kimi Code — 141_1337 · 2026-10-23
• Kimi teases next model with a wordless 24-second video — open weights expected? — lifebypixels · 2026-10-23

Episode 2 · Moonshot teases Kimi K3.1 after strong Arena showing (2026-10-23, 4 posts)

Moonshot officially teased the upcoming Kimi K3.1, which had been anonymously tested on LMArena (reportedly under the codename Kibitz) with reportedly excellent results, and comments suggest it may be priced cheaper than Kimi K3.

• Moonshot AI officially teases Kimi K3.1, previously spotted topping Arena testing — testingcatalog · 2026-10-23
• Moonshot teases Kimi K3.1 release; model spotted testing on Arena — ChrisGPT · 2026-10-23
• Moonshot teases Kimi K3.1: mystery model "Kibitz" spotted strong on Arena — testingcatalog · 2026-10-23
• Kimi K3.1 spotted on LM Arena, officially teased for imminent release — koltregaskes · 2026-10-23