Comparison
Gemini 2.5 Flash-Lite vs GPT-5.5
Per input token, Gemini 2.5 Flash-Lite runs 98% cheaper than GPT-5.5. On generated (output) tokens, GPT-5.5 costs 99% more than Gemini 2.5 Flash-Lite.
| Field | Gemini 2.5 Flash-Lite | GPT-5.5 |
|---|---|---|
| Provider | OpenAI | |
| Context window | — | 1.1M |
| Max output | — | 128K |
| Input / 1M | $0.1098% cheaper | $5.00 |
| Output / 1M | $0.4099% cheaper | $30.00 |
| Cached input / 1M | $0.0198% cheaper | $0.50 |
| Batch discount | 50% | 50% |
| Release date | — | 2026-04-23 |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Gemini 2.5 Flash-Lite | GPT-5.5 |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $16.00cheaper | $1,000 |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $26.40cheaper | $1,530 |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $13.00cheaper | $725.00 |
Gemini 2.5 Flash-Lite vs GPT-5.5 FAQ
- Is Gemini 2.5 Flash-Lite cheaper than GPT-5.5?
- Gemini 2.5 Flash-Lite costs $0.10 per 1M input tokens versus $5.00 for GPT-5.5 — Gemini 2.5 Flash-Lite is 98% cheaper per input token.
- Which is cheaper for output tokens, Gemini 2.5 Flash-Lite or GPT-5.5?
- Gemini 2.5 Flash-Lite charges $0.40 per 1M output tokens; GPT-5.5 charges $30.00 per 1M output tokens.
- Do Gemini 2.5 Flash-Lite and GPT-5.5 offer cache pricing?
- Gemini 2.5 Flash-Lite discounts cached input to $0.01 per 1M tokens. GPT-5.5 discounts cached input to $0.50 per 1M tokens.
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