Moonshot AI, the Beijing-based startup behind the Kimi chatbot, has released Kimi K3, a 2.8-trillion-parameter open-weight model that its benchmarks place just behind the strongest U.S. systems—stoking fresh doubts about whether Silicon Valley's massive AI outlays will pay off.
July 16, 2026 · Moonshot AI
Kimi K3: A Chinese Open-Weight Model Crashes the Frontier Party
A 2.8-trillion-parameter open model lands just behind the strongest U.S. systems — reigniting doubts about whether Silicon Valley's massive AI spending will pay off.
2.8T
parameters — first open-source model in the ~3T class
1M
token context window with native visual understanding
$63
to run a ~3-hour code migration — a fraction of frontier rivals
Terminal-Bench 2.1 — how close is the gap?
Agentic-task score (higher is better). Columns drawn to scale.
Just 0.5 points separates the open Chinese model from the top U.S. system.
Third-party scorecard
44.3%
Humanity's Last Exam
API priced at ~$3 per million input / $15 per million output tokens — roughly Anthropic's Sonnet tier. Weights due for public release by July 27.
Early praise
Strong on long-horizon coding and agentic tasks
Admits uncertainty rather than fabricating answers
Tops Claude Fable 5 on some frontend/web-dev leaderboards
Caution
Full verdict must wait for the open weights
Some claims rest on Moonshot's own benchmarking
Durable gap-narrowing yet to be independently probed at scale
The bigger stakes
The launch touched off a rout in AI and semiconductor stocks — echoing the earlier "DeepSeek moment."
If open-weight Chinese models can approach frontier capability at a fraction of the cost, the payoff on Silicon Valley's capital-intensive strategy looks less certain than it did a week ago. Moonshot — which shipped its first Kimi chatbot in October 2023 — is now in funding talks valuing it at $20B–$30B , up from above $4B.
Continue reading The rest of this article is for AI News Blitz readers. Choose an option below to keep reading.
Already purchased? Sign in ✓ Signed in — this article isn’t included in your current plan.Unlocking the full article…