Gemini 2.5 Pro vs GPT-5
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 if you need
- ✓Faster token generation at 167.38 t/s for quicker responses on multimodal inputs
- ✓Seamless text-image-file integration within its 400k context window
- ✓Scenarios where a hypothetical model with large but not maximum context is acceptable
Choose GPT-5 if you need
- ✓Higher intelligence index of 27 for advanced long-context reasoning across media
- ✓Over 1M token context for extended multimodal inputs including audio and complex files
- ✓Strong native integration of text, visual, and audio data in verified deployments
Verdict
Gemini 2.5 Pro leads overall with a substantially higher intelligence index (27 vs 15.3) and more than double the context length (1M vs 400k tokens), making it stronger for complex long-context multimodal reasoning. GPT-5 offers faster output speed (167 t/s vs 132 t/s) at identical pricing but remains a hypothetical model with unverified performance. Both provide native multimodal support and the same $10/1M output cost, yet Gemini's verified capabilities give it the edge for most extended multimodal tasks.
Gemini 2.5 Pro vs GPT-5: side by side
| Spec | Gemini 2.5 Pro | GPT-5 | Winner |
|---|---|---|---|
| Intelligence | 27 | 15.3 | Gemini 2.5 Pro |
| Output speed | 132 t/s | 167 t/s | GPT-5 |
| Output price | $10.00/1M | $10.00/1M | Tie |
| Context | 1049K | 400K | Gemini 2.5 Pro |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Detailed analysis
Intelligence
Winner: Gemini 2.5 ProGemini 2.5 Pro scores 27 on the intelligence index compared to GPT-5's 15.3. This gap indicates stronger performance on complex multimodal reasoning tasks according to the provided metrics.
Context Length
Winner: Gemini 2.5 ProGemini 2.5 Pro supports 1,048,576 tokens versus GPT-5's 400,000 tokens. The larger window enables handling of more extended multimodal inputs and multi-part files.
Speed
Winner: GPT-5GPT-5 achieves 167.38 tokens per second output speed while Gemini 2.5 Pro reaches 132.31 t/s. GPT-5 therefore delivers faster generation on comparable multimodal workloads.
Pricing
Winner: TieBoth models list identical output pricing at $10 per million tokens. No cost difference exists based on the given data for output usage.
Gemini 2.5 Pro
Pros
- +Very large context window for extended inputs
- +Native support for multiple modalities in one model
- +Strong integration of text with visual and audio data
Cons
- –Higher latency on very large multimodal inputs
- –Performance can vary with extremely long contexts
- –Dependent on Google infrastructure for access
GPT-5
Pros
- +Very large context window
- +Native multimodal input support
- +Seamless text-image-file integration
Cons
- –Hypothetical model with unverified performance
- –High resource demands for maximum context
- –Potential latency on large multimodal tasks
Summary: Gemini 2.5 Pro vs GPT-5
Select Gemini 2.5 Pro for higher intelligence and maximum context in multimodal work. Choose GPT-5 when output speed is the priority and the hypothetical status is not a blocker. Both share the same price point and native multimodal capabilities.
Frequently asked questions
Gemini 2.5 Pro is better due to its higher intelligence index and 1M+ token context versus GPT-5's 400k limit.