Compare GPT 6.1 Terra from OpenAI and Kimi K3 from Moonshot AI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GPT 6.1 Terra
Kimi K3GPT-6.1 Terra is OpenAI’s multimodal reasoning model, supporting text and image inputs for tasks such as product photo matching, technical drawing interpretation, application interface interaction, and text drafting and revision. It combines speed and efficiency with visual reasoning, precise computer use, and clear, natural writing.
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.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
GPT 6.1 Terra: $5/M output tokens; Kimi K3: $14.2/M. Use the cost calculator above to estimate your own workload.
Kimi K3: 0.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
GPT 6.1 Terra at 89.5 tok/s and Kimi K3 at 73.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
GPT 6.1 Terra 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.
Related model match-ups readers also look at.