Together AI vs OpenAI API(2026)
Together AI is better for teams that need access to all major open models. OpenAI API is the stronger choice if most capable models. Together AI is paid (from $0.20/1M tokens) and OpenAI API is paid (from $0.15/1M tokens (GPT-4o mini)).
Full feature breakdown, pricing details, and pros & cons below.
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Together AI
Together AI provides fast inference for 50+ open-source models including Llama, Mistral, and CodeLlama.
Starting at $0.20/1M tokens
Visit Together AIOpenAI 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 APIHow Do Together AI and OpenAI API Compare on Features?
| Feature | Together AI | OpenAI API |
|---|---|---|
| Pricing model | paid | paid |
| Starting price | $0.20/1M tokens | $0.15/1M tokens (GPT-4o mini) |
| 50+ open models | ✓ | — |
| Custom fine-tuning | ✓ | — |
| OpenAI-compatible API | ✓ | — |
| Fast inference | ✓ | — |
| Dedicated endpoints | ✓ | — |
| Embeddings | ✓ | ✓ |
| GPT-4o | — | ✓ |
| Assistants API | — | ✓ |
| Fine-tuning | — | ✓ |
| DALL-E 3 | — | ✓ |
| Whisper | — | ✓ |
| Function calling | — | ✓ |
Together AI Pros and Cons vs OpenAI API
Together AI
OpenAI API
Should You Use Together AI or OpenAI API?
Choose Together AI if…
- •Access to all major open models
- •Competitive pricing
- •Fine-tuning available
Choose OpenAI API if…
- •Most capable models
- •Largest ecosystem
- •Assistants API for stateful agents