LLM / AssistantAPILLMMulti-modalFine-tuning
OpenAI API
The most widely-used LLM API powering thousands of apps
4.7
Rating
11,400
Reviews
Pay-per-use from $0.15/M input tokens
Pricing
Overview
The OpenAI API provides access to GPT-4o, GPT-4, and o1 reasoning models, plus DALL-E, Whisper, and TTS. It is the most mature LLM API with the largest third-party ecosystem and fine-tuning support.
Best for
Production AI applications
Multi-modal apps
Fine-tuned models
Audio and image generation
Pros & Cons
✓ Pros
✓Largest ecosystem of tools and libraries
✓Fine-tuning support
✓Multi-modal -- text, image, audio, video
✓Most reliable uptime among LLM APIs
✗ Cons
✗Pricing changes frequently
✗Rate limits can be restrictive
✗Data usage policies need careful review
Use Cases
→Building ChatGPT-like products
→Voice-enabled AI assistants
→Image generation in apps
→Custom fine-tuned domain models
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Quick Facts
CategoryLLM / Assistant
Rating4.7/5
Reviews11,400
PricingPay-per-use from $0.15/M input tokens
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