OpenAI API from OpenAI exposes frontier chat, reasoning, embedding, image, and speech models through a mature REST API. It is aimed at product teams shipping LLM features, with a paid usage-based billing per token with free trial credits for new developer accounts. Costs spike quickly at scale without caching, routing, and prompt discipline. Editorial teams should verify fit against their compliance and workflow needs before rolling it out broadly.
OpenAI
OpenAI API
Developer API for GPT and multimodal models
PaidScore 95.5#2 overall#1 in LLM APIs & Models
952 editorial upvotes · editor score 4.6 / 5
Specs
| Pricing | Paid |
|---|---|
| Starting price | — |
| Free tier | No |
| Platforms | API |
| Launched | Jun 11, 2020 |
| Last verified | Oct 18, 2026 |
| Vendor | OpenAI |
Highlights
- Broad model catalog
- Strong tooling ecosystem
Pros
- Reliable uptime
- Extensive documentation
Cons
- Token costs add up fast
Alternatives
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- Hugging Face HubModel hub, datasets, and inference endpoints90.1
- Google AI StudioGemini prototyping console and API keys89.2
- OpenRouterUnified API routing across many model providers83.6
- GroqCloudUltra-low-latency inference for open models78.9
- Mistral AI PlatformEuropean frontier models with open and commercial tiers77.1
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Reviews
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