OpenAI API vs Google Gemini API(2026)
OpenAI API is better for teams that need most capable models. Google Gemini API is the stronger choice if 1m token context window. OpenAI API is paid (from $0.15/1M tokens (GPT-4o mini)) and Google Gemini API is freemium (from $0 (free tier available)).
Full feature breakdown, pricing details, and pros & cons below.
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OpenAI API
OpenAI provides API access to GPT-4, GPT-3.5, DALL-E, Whisper, and other models for developers.
Starting at $0.15/1M tokens (GPT-4o mini)
Visit OpenAI APIGoogle Gemini API
Google Gemini is a family of multimodal AI models available via Google AI Studio and Vertex AI.
Starting at $0 (free tier available)
Visit Google Gemini APIHow Do OpenAI API and Google Gemini API Compare on Features?
| Feature | OpenAI API | Google Gemini API |
|---|---|---|
| Pricing model | paid | freemium |
| Starting price | $0.15/1M tokens (GPT-4o mini) | $0 (free tier available) |
| GPT-4o | ✓ | — |
| Assistants API | ✓ | — |
| Fine-tuning | ✓ | — |
| DALL-E 3 | ✓ | — |
| Whisper | ✓ | — |
| Embeddings | ✓ | ✓ |
| Function calling | ✓ | ✓ |
| Gemini 1.5 Pro (1M context) | — | ✓ |
| Multimodal (text + image + audio) | — | ✓ |
| Grounding with Google Search | — | ✓ |
| Code generation | — | ✓ |
OpenAI API Pros and Cons vs Google Gemini API
OpenAI API
Google Gemini API
Should You Use OpenAI API or Google Gemini API?
Choose OpenAI API if…
- •Most capable models
- •Largest ecosystem
- •Assistants API for stateful agents
Choose Google Gemini API if…
- •1M token context window
- •Strong multimodal capabilities
- •Free tier (Gemini Flash)