HomeModel ComparisonsGemini 3 Flash vs GPT-5.5 Pro

Gemini 3 FlashvsGPT-5.5 Pro

Which model is more cost-effective? Compare pricing, context window limits, and run live calculations below.

0 Tokens
Expected Output TokensEstimate generation cost

Gemini 3 Flash

Google • 1,000,000 Context
Input (per 1M)
$0.5
Output (per 1M)
$3
Est. Total Cost$0.0000

GPT-5.5 Pro

OpenAI • 512,000 Context
Input (per 1M)
$30
Output (per 1M)
$180
Est. Total Cost$0.0000

In-Depth Comparison: Gemini 3 Flash vs GPT-5.5 Pro

When choosing between Gemini 3 Flash (by Google) and GPT-5.5 Pro (by OpenAI), developers must weigh API pricing and context window limits.

Gemini 3 Flash offers a context window of 1,000,000 tokens at an input cost of $0.5 per 1M tokens. On the other hand, GPT-5.5 Pro provides a 512,000 token context window, priced at $30 per 1M input tokens. This helps developers find the best balance between performance and budget.

Frequently Asked Questions

Which is cheaper: Gemini 3 Flash or GPT-5.5 Pro?
Gemini 3 Flash charges $0.5 per 1M input tokens, whereas GPT-5.5 Pro charges $30. For output, Gemini 3 Flash is $3 vs $180 for GPT-5.5 Pro.
What is the context window difference between Gemini 3 Flash and GPT-5.5 Pro?
Gemini 3 Flash offers a context window of 1,000,000 tokens. In comparison, GPT-5.5 Pro supports up to 512,000 tokens.
Who provides Gemini 3 Flash and GPT-5.5 Pro?
Gemini 3 Flash is provided by Google, and GPT-5.5 Pro is developed by OpenAI.