Gemini-2.5-flash-preview-05-20 is enabled by default for thinking; to disable it, request the name gemini-2.5-flash-preview-05-20-nothink.Only OpenAI-compatible format calls are supported; Gemini SDK is not supported. For the native Gemini SDK, please set the parameter budget=0 directly.
gemini-2.5-flash-preview-05-20-nothink vs Kimi K3
Output tokens cost $2.50 per million on gemini-2.5-flash-preview-05-20-nothink and $15.00 per million on Kimi K3. Input tokens cost $0.30 per million on gemini-2.5-flash-preview-05-20-nothink and $3.00 per million on Kimi K3. Cached input tokens are billed at $0.03 per million on gemini-2.5-flash-preview-05-20-nothink and $0.30 per million on Kimi K3. Context lengths are 1,048,576 tokens on gemini-2.5-flash-preview-05-20-nothink and 1,048,576 tokens on Kimi K3. Time to first token (TTFT) measured on AIHubMix is 0.7s on gemini-2.5-flash-preview-05-20-nothink and 0.9s on Kimi K3. Measured output throughput is 54.6 tok/s on gemini-2.5-flash-preview-05-20-nothink and 73.1 tok/s on Kimi K3.
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.
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: gemini-2.5-flash-preview-05-20-nothink, Kimi K3?
gemini-2.5-flash-preview-05-20-nothink: $2.50/M output tokens; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.
Which responds faster?
gemini-2.5-flash-preview-05-20-nothink: 0.7s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
gemini-2.5-flash-preview-05-20-nothink accepts 1,048,576 and Kimi K3 accepts 1,048,576 input tokens. Maximum output per request is 65,536 tokens on gemini-2.5-flash-preview-05-20-nothink and 1,048,576 tokens on Kimi K3.
Which one generates tokens faster?
Kimi K3 at 73.1 tok/s and gemini-2.5-flash-preview-05-20-nothink at 54.6 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
gemini-2.5-flash-preview-05-20-nothink accepts text, image, audio and video input and supports tool calling, function calling, structured outputs and long context; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.
Can I call gemini-2.5-flash-preview-05-20-nothink and Kimi K3 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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