Models

gemini-3.6-flash vs gpt-5.5

Output tokens cost $7.50 per million on gemini-3.6-flash and $30.00 per million on gpt-5.5. Input tokens cost $1.50 per million on gemini-3.6-flash and $5.00 per million on gpt-5.5. Cached input tokens are billed at $0.15 per million on gemini-3.6-flash and $0.50 per million on gpt-5.5. Context windows are 1,048,576 tokens on gemini-3.6-flash and 1,050,000 tokens on gpt-5.5. First-token latency measured on AIHubMix is 3.1s on gemini-3.6-flash and 5.4s on gpt-5.5. Measured output throughput is 123.8 tokens/s on gemini-3.6-flash and 49.1 tokens/s on gpt-5.5.

Googlegemini-3.6-flashOpenAIgpt-5.5
Google
gemini-3.6-flash
Google · text, image, audio, video → text

Gemini 3.6 Flash provides sustained frontier-level intelligence optimized for real-world tasks at a higher speed and lower cost. Designed for the agentic era, it excels at code generation, agentic execution, and spatial reasoning. This model is particularly effective for rapid agentic loops involving complex coding cycles and iterations.

Input$1.50 /M
Output$7.50 /M
OpenAI
gpt-5.5
OpenAI · text, image → text

GPT-5.5 raises the baseline for complex production workflows. It’s a strong fit for coding use cases, tool-heavy agents, grounded assistants, long-context retrieval, product-spec-to-plan workflows, and customer-facing workflows where execution quality and response polish are critical.

Input$5.00 /M
Output$30.00 /M

Specs & Pricing

Prices are per million tokens. Latency and throughput are rolling averages measured on AIHubMix.

gemini-3.6-flash
gpt-5.5
Input price
$1.50
$5.00
Output price
$7.50
$30.00
Cache read
$0.15
$0.50
Context window
1,048,576
1,050,000
Max output
65,536
128,000
Latency (first token)
3.1 s
5.4 s
Throughput
123.8 TPS
49.1 TPS
Modalities
textimageaudiovideo
textimage
Features
thinkingtoolsfunction callingstructured outputsweblong context
thinkingfunction callingstructured outputswebtools
Endpoints
chat_completions · gemini_api · claude_api
chat_completions · claude_api · responses

Promotional prices show the discounted rate; see each model page for promotion windows.

Usage on AIHubMix last 30 days

Daily traffic served through AIHubMix — how demand for each model is trending.

gemini-3.6-flashgpt-5.5

Tokens / day

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Requests / day

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Live Performance last 3 days

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

gemini-3.6-flashgpt-5.5

Throughput (TPS)

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Latency (s)

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Uptime (%)

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Cost Calculator

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

gemini-3.6-flash
$203 /mo
gpt-5.5
$750 /mo

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

FAQ

Which is cheaper: gemini-3.6-flash, gpt-5.5?

gemini-3.6-flash: $7.50/M output tokens; gpt-5.5: $30.00/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

gemini-3.6-flash: 3.1s first-token latency measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

gemini-3.6-flash accepts 1,048,576 and gpt-5.5 accepts 1,050,000 input tokens. Maximum output per request is 65,536 tokens on gemini-3.6-flash and 128,000 tokens on gpt-5.5.

Which one generates tokens faster?

gemini-3.6-flash at 123.8 tokens/s and gpt-5.5 at 49.1 tokens/s, measured as output throughput on AIHubMix — a separate metric from first-token latency.

What inputs and capabilities does each model support?

gemini-3.6-flash accepts text, image, audio and video input and supports thinking, tool calling, function calling, structured outputs, web search and long context; gpt-5.5 accepts text and image input and supports thinking, function calling, structured outputs, web search and tool calling.

Can I call gemini-3.6-flash and gpt-5.5 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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