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Gemini 2.5 Pro Preview 06-05 vs GPT 5.6 Luna

Compare Gemini 2.5 Pro Preview 06-05 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.

GoogleGemini 2.5 Pro Preview 06-05OpenAIGPT 5.6 Luna
+ Add model · 2/4
Google logo
Gemini 2.5 Pro Preview 06-05
Google · text, image, audio, video → text

Google’s latest multimodal flagship model, combining exceptional coding and reasoning capabilities. Its massive 1 million token context window (soon to expand to 2 million) places it at the top of the WebDevArena and LMArena leaderboards. It is particularly well-suited for developing aesthetically pleasing and highly functional interactive web applications, code transformation, and complex workflows. The newly introduced "reasoning budget" feature cleverly balances cost and performance, while optimized tool calls and response styles further enhance development efficiency, making it the ideal choice for rapid prototyping and advanced coding.

Input$1.25 /M
Output$10 /M
Cache read$0.125 /M
Details
OpenAI logo
GPT 5.6 Luna
OpenAI · text, image → text

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.

Input$0.2 /M
Output$1.2 /M
Cache read$0.02 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Gemini 2.5 Pro Preview 06-05
GPT 5.6 Luna
Input /M
$1.25
$0.2
Output /M
$10
$1.2
Cache read /M
$0.125
$0.02
Context length
1,048,576
1,050,000
Max output
65,536
128,000
Time to First Token
8.0 s
5.0 s
Throughput
78.2 tok/s
47.2 tok/s
Modalities
textimageaudiovideo
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
toolsthinkingstructured outputs
API Formats
chat_completions · responses
Released
June 5, 2025
July 9, 2026

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.

gemini-2.5-pro-preview-06-05gpt-5.6-luna

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

gemini-2.5-pro-preview-06-05gpt-5.6-luna

Throughput (tok/s)

-

TTFT (s)

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Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

GPT 5.6 Luna
$30.00 /mo
Gemini 2.5 Pro Preview 06-05
$225 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Gemini 2.5 Pro Preview 06-05, GPT 5.6 Luna?

GPT 5.6 Luna: $1.2/M output tokens; Gemini 2.5 Pro Preview 06-05: $10/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

GPT 5.6 Luna: 5.0s 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 Pro Preview 06-05 accepts 1,048,576 and GPT 5.6 Luna accepts 1,050,000 input tokens. Maximum output per request is 65,536 tokens on Gemini 2.5 Pro Preview 06-05 and 128,000 tokens on GPT 5.6 Luna.

Which one generates tokens faster?

Gemini 2.5 Pro Preview 06-05 at 78.2 tok/s and GPT 5.6 Luna at 47.2 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 Pro Preview 06-05 accepts text, image, audio and video 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.

Can I call Gemini 2.5 Pro Preview 06-05 and GPT 5.6 Luna 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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