Kimi K3
It happened. Kimi K3 went live July 15 — 2.8T total parameters, a 1M-token context, native vision, and a new Kimi Delta Attention + Attention Residuals architecture, at $3/M in · $15/M out. The independent verdicts came fast: Artificial Analysis scores it 57 (Opus 4.8-class, behind Fable 5 and Sol), it took #1 on Frontend Code Arena, and it now tops the LMArena text board. Full open weights land July 27 — which would make it the leading open-weights model. Track it on the Bench Index →
Leaks & news, newest first.
The independent numbers: AA Index 57, #1 Frontend Code Arena — weights July 27
Artificial Analysis puts K3 at 57 on its Intelligence Index — comparable to Opus 4.8 and GPT-5.5, behind Fable 5 and GPT-5.6 Sol — with 1668 Elo on GDPval v2, #1 on AutomationBench (53%), and second only to Fable 5 on AA-Briefcase. Cost per task: $0.94 — half of Opus 4.8’s $1.80, though far above open-weights peers. Separately, K3 jumped 17 places to #1 on Frontend Code Arena (1679), first in 6 of 7 domains — second only to Fable 5 in Gaming. Moonshot confirmed the 2.8T weights ship July 27, which would make it the clear open-weights leader (GLM-5.2: 51, DeepSeek V4 Pro: 44). via Artificial Analysis · Frontend Code Arena
Kimi K3 is live — 2.8T, 1M context, native vision
K3 appeared on the public API on July 15, and the official card confirms the scale: 2.8 trillion total parameters (MoE), 1M-token context, native visual understanding, and a new Kimi Delta Attention + Attention Residuals architecture, priced at $3/M input · $15/M output. Moonshot’s launch table claims a GDPval win over Opus 4.8 (max) and 91.2 on BrowseComp — lab-reported for now. Full open weights are promised within days. The chaotic launch day (leaked promo page, pulled campaign, app-picker sightings, the “Kivine” Arena mystery) resolved the way the market said it would. via Moonshot official docs · OpenRouter
The launch page leaked — then the launch didn't happen
A “K3 launch limited-time recharge campaign” page went live on Moonshot’s own Kimi Open Platform — promo starting Jul 15, 00:00 China time, 10–30% bonus API credits — then was pulled. The hour came and went: the official API still lists K2.7 Code and K2.6, and there’s no model card, pricing or benchmarks. A delay, an internal-campaign mixup, or a launch still landing later — nobody outside Moonshot knows. via @kimmonismus on X
K3 and "K3 Agent Swarm" surface in the Kimi app picker
Screenshots circulating today show K3 selectable in the Kimi app’s model picker (“great for slides, websites, docs”) alongside a K3 Agent Swarm mode — while the API side still shows nothing. A mystery model called “Kivine” claiming Moonshot origin also appeared on Arena. Consistent with a staged consumer-first rollout; still unconfirmed by Moonshot. via community screenshots · kie.ai
Moonshot staff: "Kimi K3 is coming in July"
A Moonshot AI staff member (@Young_AGI) said K3 arrives in July — a staff post on X, not a press release, but the most direct timing signal on record. No official date from the company itself. via @Young_AGI on X
K3 reportedly targets multi-trillion parameters
Reports place K3 anywhere from 2.5T parameters up, aimed at reasoning, multimodal and context-length gains over K2. Ranges vary by outlet; treat the specifics as rumor until weights land. via xix.ai
K2.6 → K2.7: the open-weight bar keeps rising
K2.6 shipped in April — open weights, coding scores that tie GPT-5.5-class models, and the Agent Swarm orchestration layer now running in production. It's been topping value charts ever since. via Miraflow · Verdent
The release math points at now
Moonshot ships a major model every 2–3 months. K2.6 landed in April — the window that pattern opens is exactly the one we're in. via kimi-k2.org
The official word.
"Kimi K3 is coming in July."
Moonshot AI staff (@Young_AGI) on X · Jun 2026 — a staff post, not an official company announcement
Hear it the second K3 answers.
We sweep Moonshot's public API every 60 seconds — and if the weights hit Hugging Face first, the custom watch catches that too. Email + Chrome push free, SMS and a phone call on paid tiers.