Output tokens cost $0.60 per million on GPT 4o Mini and $15.00 per million on Kimi K3. Input tokens cost $0.15 per million on GPT 4o Mini and $3.00 per million on Kimi K3. Cached input tokens are billed at $0.08 per million on GPT 4o Mini and $0.30 per million on Kimi K3. Context lengths are 128,000 tokens on GPT 4o Mini and 1,048,576 tokens on Kimi K3. Time to first token (TTFT) measured on AIHubMix is 0.6s on GPT 4o Mini and 0.9s on Kimi K3. Measured output throughput is 50.5 tok/s on GPT 4o Mini and 73.1 tok/s on Kimi K3. On the LMArena coding leaderboard GPT 4o Mini scores 1349 and Kimi K3 scores 1531.
GPT 4o Mini
Kimi K3The lightweight version of GPT-4o, which is affordable and fast, suitable for handling simple tasks; our site supports the official automatic caching for this model, and charges for cache hits will be automatically halved.
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.
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.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
GPT 4o Mini: $0.60/M output tokens; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.
Kimi K3: 1531; GPT 4o Mini: 1349 (LMArena coding leaderboard).
GPT 4o Mini: 0.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
GPT 4o Mini accepts 128,000 and Kimi K3 accepts 1,048,576 input tokens. Maximum output per request is 16,384 tokens on GPT 4o Mini and 1,048,576 tokens on Kimi K3.
Kimi K3 at 73.1 tok/s and GPT 4o Mini at 50.5 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
GPT 4o Mini accepts text and image input; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.
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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