Official APIsOfficial API for GPT models, multimodal capabilities, embeddings, realtime use cases, and broad developer tooling.
Models: GPT, reasoning models, embeddings
general AI appsBudget to premium GPT tiersShort to very long, model based
Yes OpenAI-compatibleTool callingTrust 12/15
Official APIsOfficial Claude API with strong long-context, coding, writing, and agent-oriented use cases.
Models: Claude, Claude Haiku, Claude Sonnet
codingMid to premium Claude tiersLong context options
No OpenAI-compatibleTool callingTrust 10/15
Official APIsGoogle's Gemini API and AI Studio ecosystem for multimodal models, long context, and Google Cloud integrations.
Models: Gemini, embedding models, multimodal models
multimodal appsLow-cost flash to premium tiersShort to million-token-class options
Yes OpenAI-compatibleTool callingTrust 11/15
Official APIsOfficial Mistral API for commercial and open-weight model families with European AI lab positioning.
Models: Mistral, Mixtral, Codestral
European teamsOpen and premium model tiersShort to long, model based
Yes OpenAI-compatibleTool callingTrust 11/15
Official APIsOfficial DeepSeek API for the DeepSeek-V4 family, with OpenAI and Anthropic compatible formats plus very large context windows.
Models: DeepSeek-V4-Flash, DeepSeek-V4-Pro
cost-effective long-context appsLow-cost flash to discounted pro tiers1M context, up to 384K output
Yes OpenAI-compatibleTool callingTrust 11/15
Inference ProvidersInference platform for open models, fine-tuning, dedicated endpoints, and OpenAI-compatible serverless APIs.
Models: Llama, Qwen, DeepSeek-V4
open-source modelsOften competitive for open modelsBroad open-model range
Yes OpenAI-compatibleNo tool calling listedTrust 11/15
LLM API AggregatorsUnified API for accessing many models and providers through a routing and marketplace-style interface.
Models: GPT, Claude, Gemini
model comparisonVaries by model routeModel dependent across upstream routes
Yes OpenAI-compatibleNo tool calling listedTrust 11/15
LLM API AggregatorsAI gateway and observability platform for routing, fallback, guardrails, caching, and provider management.
Models: GPT, Claude, Gemini
production gatewaysPlan dependent plus provider spendProvider dependent
Yes OpenAI-compatibleNo tool calling listedTrust 11/15