OpenAI API vs Together AI
Compare OpenAI API and Together AI on deployment, pricing, model support, and more.
OpenAI API
- Tagline
- GPT-5.6, embeddings, image, and speech APIs — the default LLM API for most AI apps
- Description
- Programmatic access to OpenAI models: GPT-5.6 (Sol / Terra / Luna), legacy GPT-4o IDs where still offered, image and speech models, embeddings, and agent/assistant APIs. OpenAI-compatible Chat Completions remain the industry default interface. Confirm current model IDs and pricing on platform.openai.com — GPT-4 branding is outdated for new builds.
- Category
- Code / DevTools
- Pricing
- Freemium
- Metric
- 2,000,000 Developers using OpenAI API (source)
- Link
- Visit
Together AI
- Tagline
- Open-source LLM inference and fine-tuning API — run Llama, Mistral, and 100+ models with competitive pricing
- Description
- Together AI is a cloud platform for running, fine-tuning, and deploying open-source LLMs. With 100+ available models including Llama 3.1, Mistral, Mixtral, Qwen, and DBRX, it provides OpenAI-compatible API endpoints at competitive per-token pricing. Together AI uniquely offers serverless inference, fine-tuning, and dedicated deployments — making it a one-stop shop for teams building on open models who want more than just inference.
- Category
- LLM Frameworks
- Pricing
- Freemium
- Metric
- —
- Link
- Visit
| Attribute | OpenAI API | Together AI |
|---|---|---|
| Tagline | GPT-5.6, embeddings, image, and speech APIs — the default LLM API for most AI apps | Open-source LLM inference and fine-tuning API — run Llama, Mistral, and 100+ models with competitive pricing |
| Category | Code / DevTools | LLM Frameworks |
| Pricing | Freemium | Freemium |
| Description | Programmatic access to OpenAI models: GPT-5.6 (Sol / Terra / Luna), legacy GPT-4o IDs where still offered, image and speech models, embeddings, and agent/assistant APIs. OpenAI-compatible Chat Completions remain the industry default interface. Confirm current model IDs and pricing on platform.openai.com — GPT-4 branding is outdated for new builds. | Together AI is a cloud platform for running, fine-tuning, and deploying open-source LLMs. With 100+ available models including Llama 3.1, Mistral, Mixtral, Qwen, and DBRX, it provides OpenAI-compatible API endpoints at competitive per-token pricing. Together AI uniquely offers serverless inference, fine-tuning, and dedicated deployments — making it a one-stop shop for teams building on open models who want more than just inference. |
| Metric | 2,000,000 Developers using OpenAI API (source) | — |
| Link | Visit | Visit |