Gemini 2.5 Flash-Lite is a lightweight reasoning model in the Gemini 2.5 family, optimized for ultra-low latency and cost efficiency. It offers improved throughput, faster token generation, and better performance across common benchmarks co…
Model details →Google: Gemini 2.5 Flash Lite Preview 09-2025 vs OpenAI: GPT-5.1-Codex-Mini
Google: Gemini 2.5 Flash Lite Preview 09-2025 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Model details →Side-by-side comparison
| Capability | Google: Gemini 2.5 Flash Lite Preview 09-2025 | OpenAI: GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 400K | 🏆 Google: Gemini 2.5 Flash Lite Preview 09-2025 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.10 | $0.25 | 🏆 Google: Gemini 2.5 Flash Lite Preview 09-2025 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.40 | $2.00 | 🏆 Google: Gemini 2.5 Flash Lite Preview 09-2025 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Google: Gemini 2.5 Flash Lite Preview 09-2025 better than OpenAI: GPT-5.1-Codex-Mini?
Google: Gemini 2.5 Flash Lite Preview 09-2025 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 2.5 Flash Lite Preview 09-2025 and OpenAI: GPT-5.1-Codex-Mini?
Input: $0.10 vs $0.25 per 1M tokens. Output: $0.40 vs $2.00 per 1M tokens.
What context windows do Google: Gemini 2.5 Flash Lite Preview 09-2025 and OpenAI: GPT-5.1-Codex-Mini support?
Google: Gemini 2.5 Flash Lite Preview 09-2025 supports up to 1.0M tokens. OpenAI: GPT-5.1-Codex-Mini supports up to 400K tokens.
Do both Google: Gemini 2.5 Flash Lite Preview 09-2025 and OpenAI: GPT-5.1-Codex-Mini support tool calling?
Google: Gemini 2.5 Flash Lite Preview 09-2025: yes. OpenAI: GPT-5.1-Codex-Mini: yes.