💡Moonshot AI Unveils Kimi K3: World's Largest Open-Source Model
The biggest open-source model just got bigger — and it's free to try
TL;DR
Moonshot AI released Kimi K3, a 2.8-trillion-parameter behemoth set to challenge proprietary models from Anthropic and OpenAI. Full weights available July 27.
Moonshot AI just dropped Kimi K3, the world's largest open-source model with 2.8 trillion parameters. This isn't just another big number — it means developers get a shot at cutting-edge tech without proprietary strings attached. If you're working on complex NLP tasks or need massive context windows, this is your new go-to. Kimi K3 has a native visual understanding and an always-on reasoning mode called 'thinking mode'. It's priced at $3 per million input tokens and $15 for output, with cached inputs dropping to just $0.30 per million.

Key Points
Kimi K3 features a 1-million-token context window, making it ideal for long-text analysis tasks.
The model benchmarks neck-and-neck with Claude and GPT on GDPval-AA v2, scoring 1,687 points.
On AA-Briefcase, Kimi K3 ranked second overall with a score of 1,527, outperforming many proprietary systems.
Kimi K3 achieved a state-of-the-art score of 91.2 out of 100 on BrowseComp, showcasing its advanced reasoning capabilities.
Full model weights will be released on July 27, with promotional rebates up to 30% for API credits over $1,000.
Why It Matters
If you're working on complex NLP tasks or need massive context windows, Kimi K3 is a game-changer. It offers advanced visual understanding and reasoning capabilities at a price point that's competitive with proprietary models. Developers using OpenAI SDK can easily integrate Kimi K3 into their workflows.
Frequently Asked Questions
Why does this matter?
If you're working on complex NLP tasks or need massive context windows, Kimi K3 is a game-changer. It offers advanced visual understanding and reasoning capabilities at a price point that's competitive with proprietary models. Developers using OpenAI SDK can easily integrate Kimi K3 into their workflows.
What happened?
Moonshot AI released Kimi K3, a 2.8-trillion-parameter behemoth set to challenge proprietary models from Anthropic and OpenAI. Full weights available July 27.
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