Gemini 2.5 Pro vs GPT-4o
2026 - Pricing, benchmarks, and use case comparison
Quick take
- •Gemini 2.5 Pro is 50% cheaper on input tokens - better for high-volume workloads.
- •Gemini 2.5 Pro has a 1M context window - 8x larger than GPT-4o's 128K. Better for long documents and large codebases.
Specs comparison
| Gemini 2.5 Pro | GPT-4o | |
|---|---|---|
| Provider | Google DeepMind | OpenAI |
| Type | Closed source | Closed source |
| Context window | ✓1M | 128K |
| Input / 1M tokens | ✓$1.25 | $2.50 |
| Output / 1M tokens | $10.00 | $10.00 |
| Release date | 2025-03 | 2024-05 |
Benchmarks
| Benchmark | Gemini 2.5 Pro | GPT-4o |
|---|---|---|
| GPQA Diamond | 86.4% | - |
| MMLU | 90.9% | 88.7% |
| SWE-bench Verified | 63.2% | - |
| HumanEval | - | 90.2% |
| GPQA | - | 53.6% |
Scores sourced from official provider release posts.
Strengths
Gemini 2.5 Pro
- ✓Largest commercial context window (1M tokens)
- ✓Top benchmark scores on science and math
- ✓Strong multimodal: video, audio, images
- ✓Competitive pricing for the capability tier
- ✓Native Google Search and code execution tools
GPT-4o
- ✓Native multimodal input (text, image, audio)
- ✓Fast response times at this capability level
- ✓Strong on structured data and JSON output
- ✓Best ecosystem support across SDKs and tools
- ✓Real-time audio capabilities
Which should you choose?
Choose Gemini 2.5 Pro if you need...
- →Very long document analysis
- →Video and multimodal understanding
- →Scientific research tasks
- →Large codebase comprehension
Choose GPT-4o if you need...
- →Multimodal apps
- →High-volume production use
- →Chatbots and assistants
- →Structured data extraction