Gemini 2.5 Pro Preview 06-05 vs GPT-5.1-Codex-Mini
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Gemini 2.5 Pro Preview 06-05 if you need
- ✓Choose GPT-5.1-Codex-Mini if you need strong coding specialization with native image + text support.
- ✓Choose GPT-5.1-Codex-Mini if you need the lowest output price at $2 per million tokens.
- ✓Choose GPT-5.1-Codex-Mini if you need a documented high output speed of 214.54 t/s.
- ✓Choose GPT-5.1-Codex-Mini if you need a 400k context window for extended technical workflows.
Choose GPT-5.1-Codex-Mini if you need
- ✓Choose Gemini 2.5 Pro Preview 06-05 if you need 1,048,576-token context for extremely long inputs.
- ✓Choose Gemini 2.5 Pro Preview 06-05 if you need native support for text, image, audio and files.
- ✓Choose Gemini 2.5 Pro Preview 06-05 if you need large file upload handling alongside reasoning and coding.
- ✓Choose Gemini 2.5 Pro Preview 06-05 if you need broader multimodal integration beyond image and text.
Verdict
GPT-5.1-Codex-Mini leads on price and measured speed for coding-focused multimodal work, while Gemini 2.5 Pro Preview 06-05 leads on raw context length and broader media support. A offers a 400k context at $2/1M with 214.54 t/s and explicit coding strengths; B reaches 1M+ tokens at $10/1M with native audio and file handling but unknown speed and intelligence metrics. The choice hinges on whether specialized coding workflows or maximum-length multi-media inputs matter most.
Gemini 2.5 Pro Preview 06-05 vs GPT-5.1-Codex-Mini: side by side
| Spec | Gemini 2.5 Pro Preview 06-05 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Intelligence | — | 30.6 | Tie |
| Output speed | — | 215 t/s | Tie |
| Output price | $10.00/1M | $2.00/1M | GPT-5.1-Codex-Mini |
| Context | 1049K | 400K | Gemini 2.5 Pro Preview 06-05 |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Detailed analysis
Pricing
Winner: GPT-5.1-Codex-MiniGPT-5.1-Codex-Mini costs $2 per million output tokens. Gemini 2.5 Pro Preview 06-05 costs $10 per million output tokens. The five-fold price difference favors A for high-volume use.
Context Length
Winner: Gemini 2.5 Pro Preview 06-05Gemini 2.5 Pro Preview 06-05 provides 1,048,576 tokens. GPT-5.1-Codex-Mini provides 400,000 tokens. B handles roughly 2.6 times more context for long-document or multi-file tasks.
Modalities & Specialization
Winner: Gemini 2.5 Pro Preview 06-05Gemini 2.5 Pro Preview 06-05 integrates text, image, audio and files with large-file support. GPT-5.1-Codex-Mini is limited to image and text with explicit coding specialization. B covers more media types while A targets coding workflows.
Speed & Intelligence Data
Winner: GPT-5.1-Codex-MiniGPT-5.1-Codex-Mini reports 214.54 tokens per second and an intelligence index of 30.6. Gemini 2.5 Pro Preview 06-05 lists no speed or intelligence numbers. Only A supplies concrete performance metrics.
Gemini 2.5 Pro Preview 06-05
Pros
- +Handles extremely long inputs effectively
- +Strong integration of text, image, audio and files
- +Solid performance on reasoning and coding tasks
Cons
- –Preview release may show occasional instability
- –Slower responses with maximum context sizes
- –Less optimized for real-time voice conversations
GPT-5.1-Codex-Mini
Pros
- +Very large context window
- +Strong coding specialization
- +Native image + text support
Cons
- –Mini variant may have reduced depth on complex reasoning
- –Limited to image and text modalities
- –Trade-off between context size and response speed
Summary: Gemini 2.5 Pro Preview 06-05 vs GPT-5.1-Codex-Mini
Select GPT-5.1-Codex-Mini when coding tasks, lower cost, and known speed are priorities within a 400k context. Select Gemini 2.5 Pro Preview 06-05 when maximum context length and audio/file modalities outweigh the higher price and missing benchmarks. Both remain proprietary models from OpenAI and Google respectively.
Frequently asked questions
GPT-5.1-Codex-Mini at $2 per million output tokens versus Gemini 2.5 Pro Preview 06-05 at $10 per million output tokens.