Find, compare, and integrate the top ai & ml APIs. Access sandboxes, read developer reviews, check pricing details, and review local support options.
Written by Editorial Staffs as at 7th June, 2026
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| Pricing | Free: 25 requests/day. Premium from $50/month for higher limits. | Completely free service | Free tier: 5000 requests/month, Paid available | Free for non-commercial research. Commercial use via Google Cloud pricing. | Gemini 1.5 Flash: Free tier available. Gemini 1.5 Pro: $3.50/1M input tokens. Generous free tier. | Free Inference API with rate limits. Inference Endpoints from $0.06/hour. Pro plan $9/month. | Free tier: 10,000 characters/month, Paid available | Free lite tier for each service. Paid plans vary by Watson service. | Free tier: 30000 NLU items/month, Paid available | Enterprise partnerships required | Free tier available, Paid plans available | Free tier available, Paid plans available | Pay-per-token. GPT-4o: $2.50/1M input tokens, $10/1M output tokens. Free $5 trial credits. | Free credits on signup (~25 credits). Pay-per-image after: from $0.01/image on Stable Image Core. | open source | Free tier available, Paid plans available |
| Real-time Stock Prices | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Historical OHLCV Data | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Forex Rates | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Cryptocurrency Prices | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Technical Indicators (RSI, MACD etc) | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Fundamental Data | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Earnings Data | Yes | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Free Tier | Yes | Yes | Yes | No | Yes | Yes | Yes | No | Yes | No | Yes | Yes | No | No | No | Yes |
| Nigerian Stocks (NGX) | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Batch Requests | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| API Access | No | Yes | Yes | Yes | No | No | Yes | No | Yes | Yes | Yes | Yes | No | No | No | Yes |
| JSON Responses | No | Yes | Yes | No | No | No | Yes | No | Yes | Yes | Yes | Yes | No | No | No | Yes |
| HTTPS Secure | No | Yes | Yes | No | No | No | Yes | No | Yes | Yes | Yes | Yes | No | No | No | Yes |
| Documentation | No | Yes | Yes | No | No | No | Yes | No | Yes | Yes | Yes | Yes | No | No | No | Yes |
| Sandbox | No | No | Yes | No | No | No | Yes | No | Yes | No | Yes | Yes | No | No | No | Yes |
| Crop Type Classification | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Field Boundary Detection | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Change Detection | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Event Detection | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Satellite Imagery | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Historical Analysis | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Global Coverage | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| High Accuracy | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Maps Integration | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Text Generation | No | No | No | No | Yes | Yes | No | No | No | No | No | No | Yes | No | No | No |
| Image Understanding | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Audio Processing | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Video Analysis | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Code Generation | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Function Calling | No | No | No | No | Yes | No | No | No | No | No | No | No | Yes | No | No | No |
| Embeddings | No | No | No | No | Yes | No | No | No | No | No | No | No | Yes | No | No | No |
| Grounding (Google Search) | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Streaming | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Text Classification | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Image Generation | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Speech Recognition | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Translation | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Summarization | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Question Answering | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Custom Model Deployment | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Serverless Inference | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No | No | No |
| Watson Assistant (Chatbot) | No | No | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Natural Language Understanding | No | No | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Speech to Text | No | No | No | No | No | No | No | Yes | No | No | No | No | Yes | No | No | No |
| Text to Speech | No | No | No | No | No | No | No | Yes | No | No | No | No | Yes | No | No | No |
| Language Translator | No | No | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Tone Analyzer | No | No | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Watson Discovery | No | No | No | No | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Visual Recognition | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No | No |
| Chat Completion | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No | No |
| Vision / Image Input | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No | No |
| JSON Mode | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No | No |
| Fine-tuning | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No | No |
| Image Generation (DALL-E) | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No | No |
| Text-to-Image | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Image-to-Image | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Inpainting | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Outpainting | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Image Upscaling | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Multiple Model Versions | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| Free Starter Credits | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No | No |
| REST Endpoint Serving | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| gRPC Endpoint Serving | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| Model Versioning | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| Request Batching | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| GPU Support | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| Multi-model Serving | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| Self-hosted | No | No | No | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
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