OpenAI API
by OpenAI
GPT models, embeddings, whisper, TTS via API
Pricing
Pay-per-token (GPT-4o: $2.50/$10 per 1M tokens)
Difficulty
beginner
Time to Start
1 hour
Privacy
high
Free Tier
Free: $5 initial credits (new accounts); rate-limited; GPT-4o-mini free tier
Limits: Free: $5 credits; pay-per-use after; rate limits by tier (Tier 1-5 based on spend)
When to upgrade: Credit exhaustion; higher rate limits; access to newest models; batch API; fine-tuning
Use Cases
Chat completions; embeddings; image generation; text-to-speech; vision; fine-tuning; assistants
Technical Details
Ideal For
Supported Content
Output Formats
Alternatives
Anthropic API
by Anthropic
Claude models via API
Free: Free: $5 initial credits; rate-limited; all Claude models accessible
Google Vertex AI
by Google Cloud
Enterprise ML/AI platform with Gemini models
Free: $300 Google Cloud free trial credits; Gemini API free tier via AI Studio (1,500 req/day)
Amazon Bedrock
by AWS
Managed access to multiple foundation models
Free: AWS Free Tier: limited model usage for first 2 months; varies by model
Azure OpenAI Service
by Microsoft
OpenAI models on Azure infrastructure
Free: Azure free account: $200 credits for 30 days; OpenAI models included