Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.
Kimi K3 vs Longcat 2.0
Output tokens cost $15.00 per million on Kimi K3 and $3.10 per million on Longcat 2.0. Input tokens cost $3.00 per million on Kimi K3 and $0.77 per million on Longcat 2.0. Cached input tokens are billed at $0.30 per million on Kimi K3 and $0.02 per million on Longcat 2.0. Time to first token (TTFT) measured on AIHubMix is 0.9s on Kimi K3 and 6.1s on Longcat 2.0. Measured output throughput is 73.1 tok/s on Kimi K3 and 38.5 tok/s on Longcat 2.0.
Longcat 2.0Designed for agent development scenarios, it natively supports tool invocation, multi-step reasoning, and long-context tasks; it excels at code generation, automated workflows, and executing complex instructions; and it is deeply adapted to productivity tools such as Claude Code, OpenClaw, OpenCode, and Kilo Code.
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
Tokens / day
Requests / day
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Throughput (tok/s)
TTFT (s)
Uptime (%)
Cost calculator
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: Kimi K3, Longcat 2.0?
Longcat 2.0: $3.10/M output tokens; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.
Which responds faster?
Kimi K3: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Which one generates tokens faster?
Kimi K3 at 73.1 tok/s and Longcat 2.0 at 38.5 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs; Longcat 2.0 accepts text input and supports thinking and tool calling.
Can I call Kimi K3 and Longcat 2.0 with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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