Amazon Bedrock
Paid
AWS's managed service for using many foundation models through one API.
All tools
OpenAI API
LLM Platforms
Paid
OpenAI's developer platform for GPT models, image generation, speech and agents.
About OpenAI API
The OpenAI API is how developers use GPT models inside their own products. It covers text and reasoning models, image generation, speech to text, text to speech and embeddings, all through one account and one set of SDKs.
It supports function calling, structured outputs and an agents toolkit, so apps can call tools and return data in a predictable format. Fine-tuning and batch processing are available for larger workloads.
Pricing is pay as you go, based on tokens. It is the default starting point for many AI projects, mostly because of its size, documentation and ecosystem.
Standout features
- GPT text and reasoning models
- Image generation
- Speech to text and text to speech
- Embeddings
- Function calling and structured outputs
- Agents tooling
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