Comparison · AI tool
Gemini 2.5 vs GPT-5: Google vs OpenAI in 2026
Quick verdict
Gemini 2.5 wins if your work is glued to Google Workspace and you need a million-token context for huge documents or video. GPT-5 wins on third-party ecosystem, voice and the best-loved consumer chat. Many serious pros run both for USD 40/mo combined.
Comparison table
| Criterion | Gemini 2.5 | GPT-5 |
|---|---|---|
| Vendor | OpenAI | |
| Base monthly price | USD 19.99 (Google AI Pro) | USD 20 (ChatGPT Plus) |
| Context window | Up to 1M tokens | Large (see vendor docs) |
| Workspace integration | Native | Via plug-ins/GPTs |
| Image generation | Yes (Imagen) | Yes |
| Voice mode | Live (real-time) | Advanced Voice |
| Best for | Workspace + long context | General + ecosystem |
Gemini 2.5: pros
- Massive 1M-token context for huge inputs
- Native Gmail / Docs / Sheets / Drive integration
- Strong video and YouTube understanding
- Real-time Search grounding
Cons
- Smaller third-party ecosystem than ChatGPT
- Output quality more variable than GPT-5 in some categories
GPT-5: pros
- Largest GPT/plug-in ecosystem
- Excellent voice and multimodal experience
- Strong default for general consumers
- Polished mobile and desktop apps
Cons
- Workspace integration via plug-ins, not native
- Pro tier (USD 200/mo) is steep
Final verdict
Live in Google Workspace? Gemini 2.5 wins. Want the broadest ecosystem? GPT-5 wins. They cost the same and work fine side by side.
Browse the full catalogFrequently asked questions
Is Gemini 2.5 free?
Yes, there is a free tier. The full Gemini 2.5 Pro experience inside Google apps is Google AI Pro at USD 19.99/month, with a higher Ultra tier — see Google's pricing page.
Which has a longer context window, Gemini 2.5 or GPT-5?
Gemini 2.5 Pro currently leads with up to a 1M-token context. GPT-5's window is also large; verify exact limits in OpenAI's docs.
Does Gemini 2.5 work with Microsoft Office?
It can read uploaded Office files but is natively integrated with Google Workspace, not Office. For Office, Microsoft Copilot is the native option.
Which is better for code?
Both are competitive. GPT-5 has stronger third-party tool integration; Gemini 2.5's huge context shines when you paste an entire repo or design doc.
Can I use both Gemini 2.5 and GPT-5?
Yes. Many pros do — combined cost is around USD 40/month and each is stronger at different tasks.
Is GPT-5 already released?
Yes. OpenAI released GPT-5 in 2025 across ChatGPT and the API.