Compare Gemini 2.5 Pro Preview 03-25 from Google and GPT 5.6 Luna from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Gemini 2.5 Pro Preview 03-25
GPT 5.6 LunaSupports high concurrency. The Gemini 2.5 Pro preview version is here, with higher limits for production testing. Google's latest and most powerful model;
GPT-5.6 Luna is designed for cost-sensitive, high-volume workloads. It roughly corresponds to the nano model tier used in earlier GPT-5 families.
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 5.6 Luna: $6/M output tokens; Gemini 2.5 Pro Preview 03-25: $10/M. Use the cost calculator above to estimate your own workload.
GPT 5.6 Luna: 2.2s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Gemini 2.5 Pro Preview 03-25 at 97.7 tok/s and GPT 5.6 Luna at 88.4 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Gemini 2.5 Pro Preview 03-25 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context; GPT 5.6 Luna accepts text and image input and supports tool calling, thinking 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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