Gemini 3.1 Flash Lite vs GPT-5.3 Codex
google/gemini-3.1-flash-lite · openai/gpt-5.3-codex
As of November 2, 2026, Gemini 3.1 Flash Lite is the cheaper API on UberLLM: $0.0025 per million input tokens and $0.0149 per million output, versus $0.0939 / $0.7509 for GPT-5.3 Codex, about 98% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose Gemini 3.1 Flash Lite to cut cost; choose GPT-5.3 Codex when its capabilities fit your task better.
Gemini 3.1 Flash Lite vs GPT-5.3 Codex, side by side
| Spec | Gemini 3.1 Flash Lite | GPT-5.3 Codex |
|---|---|---|
| Price · input / 1M | $0.0025 | $0.0939 |
| Price · output / 1M | $0.0149 | $0.7509 |
| Context length | 1,048,576 | 400,000 |
| Max output tokens | 65,536 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 99% off | 94.6% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 2, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Gemini 3.1 Flash Lite vs GPT-5.3 Codex — FAQ
Is Gemini 3.1 Flash Lite or GPT-5.3 Codex cheaper?
Gemini 3.1 Flash Lite is cheaper on a blended token mix, by about 98%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Gemini 3.1 Flash Lite and GPT-5.3 Codex?
Gemini 3.1 Flash Lite: $0.0025 in / $0.0149 out per 1M tokens. GPT-5.3 Codex: $0.0939 in / $0.7509 out per 1M tokens. That's roughly a 98% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Gemini 3.1 Flash Lite and GPT-5.3 Codex with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.