established · 0.7

OpenAI-Compatible

Score 26.6 / 100 59 providers 38 APIs Search apis.io →
Variants seen in the corpus: OpenAI CompatibleOpenAI compatibleOpenAI-CompatibleOpenAI-compatibleopenai-compatible

Providers using this tag (59)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
NVIDIA NIMArtificial IntelligenceInferenceMicroservicesLLM11 APIs71.2
Strong 3 Solid coverage with minor gaps
CloudflareAI GatewayAPI GatewayArtificial IntelligenceCDN87 APIs62.0CrusoeAI InfrastructureCloud ComputingGPU ComputeMachine-Learning63 APIs60.6Prime IntellectArtificial IntelligenceReinforcement LearningGPU ComputeDecentralized Compute20 APIs55.1
Developing 19 Usable, with meaningful gaps to close
InferenceCompanyArtificial IntelligenceMachine-LearningLLM1 API53.9RightNow AICompanyArtificial IntelligenceMachine-LearningLLM Inference7 APIs53.50G LabsArtificial IntelligenceAI InferenceLLMGPU Compute9 APIs51.2LambdaArtificial IntelligenceCloudClusterCompute13 APIs50.9OpenRelayCompanyGPUInferenceArtificial Intelligence19 APIs50.8FriendliAICompanyInfrastructureArtificial IntelligenceMachine-Learning33 APIs49.9ZotGPT (UC Irvine)Artificial IntelligenceGenerative AILLMAI Gateway2 APIs48.5RouterPlexLLMArtificial IntelligenceAI GatewayInference5 APIs47.2BifrostAI GatewayLLMLoad BalancingOpen-Source4 APIs47.1Recursal AI, Inc.CompanyArtificial IntelligenceMachine-LearningLLM3 APIs47.0FlexAICompanyAi MlArtificial IntelligenceMachine-Learning7 APIs46.8Inception LabsArtificial IntelligenceMachine-LearningLarge Language ModelsDiffusion Models4 APIs45.4FuriosaAIArtificial IntelligenceMachine-LearningInferenceSemiconductors3 APIs44.6Novita AIArtificial IntelligenceLLMInferenceGPU2 APIs44.2Adaptive MLCompanyAi MlLLMFine-Tuning9 APIs43.5WanAPIsLLM GatewayAI API GatewayModel Marketplace9 APIs42.2CerebrasAI InferenceLarge Language ModelsWafer ScaleHardware4 APIs42.0Akash NetworkCloud ComputingDecentralizedBlockchainKubernetes41 APIs39.9nexos.aiCompanyArtificial IntelligenceLLMAI Gateway16 APIs39.6
Thin 29 Limited public surface area
SambaNovaAI InferenceLarge Language ModelsDataflowsHardware5 APIs38.9CerebriumArtificial IntelligenceGPUServerlessInference3 APIs38.0Kimi (Moonshot AI)LLMLong ContextArtificial Intelligence13 APIs38.0LinkAGI Model APIArtificial IntelligenceLLMAI API GatewayRelay5 APIs38.0RekaArtificial IntelligenceMulti-ModalLarge Language ModelsVision9 APIs37.9Secton APIArtificial IntelligenceInferenceLLMChat Completions2 APIs37.6Scalable Inference ServingArtificial IntelligenceCNCFDeploymentInference9 APIs37.5Weights and BiasesMLOpsExperiment TrackingLLM ObservabilityModel Registry16 APIs36.7BasetenArtificial IntelligenceMLInferenceDeployment3 APIs35.6PositronArtificial IntelligenceAI Inferenceinference-hardwareAI Accelerators5 APIs35.6CometAPIArtificial IntelligenceAggregatorAudioChat6 APIs35.2Dartmouth CollegeEducationHigher EducationUniversityResearch9 APIs35.1TaalasCompanyArtificial IntelligenceAI InferenceSemiconductors3 APIs34.3TextcortexCompanyArtificial IntelligenceText GenerationLarge Language Models4 APIs34.1poolsideCompanyEnterpriseArtificial IntelligenceMachine-Learning1 API33.7EigenLayerRestakingAVSEthereumData Availability7 APIs33.5WeaveAPI - OpenAI-compatible AI API GatewayArtificial IntelligenceLLMAI InferenceAPI Gateway2 APIs33.2WomboCompanyArtificial IntelligenceMachine-LearningInference4 APIs31.5GlamaArtificial IntelligenceMCPLLM GatewayMCP Gateway7 APIs30.3MangoBoostCompanyArtificial IntelligenceMachine-LearningInfrastructure3 APIs29.6QwenArtificial IntelligenceLLMInferenceOpen-Source4 APIs29.301.AIArtificial IntelligenceLLMYiOpen-Source2 APIs29.2DeepInfraArtificial IntelligenceLLMInferenceServerless7 APIs28.9HyperbolicArtificial IntelligenceLLMInferenceGPU7 APIs28.7ByteDance DoubaoArtificial IntelligenceLLMInferenceByteDance6 APIs27.9SiliconFlowArtificial IntelligenceLLMInferenceOpen-Source11 APIs27.8OpenPipeArtificial IntelligenceLLMFine-TuningDistillation10 APIs27.7vLLMLLMInferenceOpen-SourceGPU7 APIs27.0AsterlabCompanyArtificial IntelligenceMachine-LearningLLM1 API26.5
Emerging 5 Early or largely undocumented
io.netArtificial IntelligenceGPUDecentralized ComputeDePIN8 APIs26.1Cumulus LabsCompanyInferenceLLMAI Infrastructure1 API25.8NebiusArtificial IntelligenceCloudComputeGPU6 APIs25.6Infini-AI (无问芯穹)CompanyArtificial IntelligenceMachine-LearningLarge Language Models1 API12.4Lepton AIArtificial IntelligenceMLInferenceCloud1 API12.4
Minimal 2 Almost no public developer surface
Sakana AIArtificial IntelligenceLLMResearchFoundation Models1 API10.9OctoAIAcquiredDefunctAI InferenceGenerative AI5 APIs8.2

APIs with this tag (37)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 3 Complete, well-documented, and agent-ready
NVIDIA NIM Completions APILegacy OpenAI-compatible text completion endpoint (/v1/completions) for non-chat foundation models served b...71.2NVIDIA NIM Embeddings APIOpenAI-compatible embeddings endpoint (/v1/embeddings) backed by NVIDIA NeMo Retriever text embedding model...71.2NVIDIA NIM Models APIOpenAI-compatible model catalog endpoint (/v1/models) returning the list of models served by the NIM endpoi...71.2
Strong 3 Solid coverage with minor gaps
Cloudflare OpenAI Compatible APIOpenAI-compatible endpoints for chat completions, text completions, embeddings, and responses.62.0Crusoe Managed Inference APIOpenAI-compatible inference API from the Crusoe Intelligence Foundry. Send chat/completions and embeddings ...60.6Prime Intellect Inference APIOpenAI-compatible inference API for hosted frontier and open models served at api.pinference.ai. Supports s...55.1
Developing 7 Usable, with meaningful gaps to close
Inference.net APIOpenAI-compatible inference API for open-source, frontier, and custom language models — chat completions, b...53.9Lambda Inference APILambda Inference API is an OpenAI-compatible REST gateway at https://api.lambda.ai/v1 that serves hosted op...50.9OpenRelay Inference APIOpenAI-compatible chat completions API (POST /v1/chat/completions) and, for supporting models, an Anthropic...50.8ZotGPT API (Deprecated)The first-generation ZotGPT developer API, an OpenAI-compatible chat completions endpoint fronted by Azure ...48.5WanAPIs Unified AI APIOpenAI-compatible REST API gateway aggregating GPT, Claude, Gemini, DeepSeek, plus image, video, and audio ...42.2Cerebras Inference APIThe Cerebras Inference API exposes ultra-low-latency inference for open-weight large language models includ...42.0AkashML Inference APIOpenAI-compatible AI inference API providing access to open-source LLMs hosted on decentralized compute acr...39.9
Thin 17 Limited public surface area
SambaCloud APIThe SambaCloud API exposes OpenAI-compatible chat completions over SambaNova's RDU-accelerated infrastructu...38.9Cerebrium OpenAI Compatible APIThe OpenAI Compatible API from Cerebrium — 2 operation(s) for openai compatible.38.0LinkAGI Model API OpenAI compatible APIOpenAI-compatible Chat Completions and Responses routes.38.0vLLM OpenAI-Compatible APIvLLM is a high-throughput and memory-efficient inference engine for LLMs, implementing PagedAttention for e...37.5W&B Serverless Inference (CoreWeave)OpenAI-compatible inference API for hosted open-source foundation models, running on CoreWeave GPU infrastr...36.7Dartmouth Chat AI APIAn OpenAI-compatible REST API exposing large language models, embedding models, and reranking models deploy...35.1Poolside APIOpenAI-compatible inference API for poolside's Laguna agentic-coding models. Send chat-completion and model...33.7EigenAIEigenAI exposes deterministic, verifiable LLM inference over an OpenAI-compatible API surface, with executi...33.5WeaveAPI OpenAI-compatible APIOpenAI-wire-compatible REST API for chat completions, responses-style requests and the model catalog, authe...33.2Glama AI GatewayOpenAI-compatible LLM gateway exposing 90+ models from OpenAI, Anthropic, Google, DeepSeek, Mistral, xAI, M...30.3Mango LLMBoost Inference Server APILLMBoost is MangoBoost's enterprise LLM inference server. It serves the OpenAI REST API on /v1 so an existi...29.6DashScope (Alibaba Cloud Model Studio) APINative Alibaba Cloud Model Studio API serving the Qwen model family. Provides chat completions, multimodal ...29.3Lingyiwanwu Platform APIOpenAI-compatible chat completions and vision endpoints for the Yi model family. Base URL https://api.lingy...29.2Hyperbolic Serverless Inference APIOpenAI-compatible inference API for 25+ open-source models. Surfaces include text chat, vision, image gener...28.7Volcano Engine Ark APIOpenAI-compatible chat, responses, embedding, batch, image (Seedream), video (Seedance), 3D, and TTS APIs s...27.9vLLM OpenAI-Compatible ServerOpenAI-compatible REST API exposed by `vllm serve`. Endpoints include /v1/chat/completions, /v1/completions...27.0Aster Inference APIOpenAI-compatible inference API from Aster serving open-weight models (gpt-oss-120b, gpt-oss-120b-fast, GLM...26.5
Emerging 5 Early or largely undocumented
IO Intelligence APIOpenAI-compatible inference API for open-source AI models hosted on io.net's decentralized GPU network. Exp...26.1Cumulus Inference GatewayOpenAI-compatible HTTP inference gateway. One client works against every upstream provider; per-workflow ro...25.8Nebius Token FactoryNebius Token Factory is the AI model inference platform offering OpenAI-compatible endpoints for serving op...25.6Infini-AI GenStudio Large-Model Service (MaaS)OpenAI-compatible model-inference API over Infini-AI's catalog of open- and closed-source models. Bearer (A...12.4NVIDIA DGX Cloud Lepton APIManaged AI platform API exposing model endpoints (HTTP server with OpenAI-compatible chat surface), dev ses...12.4
Minimal 2 Almost no public developer surface
Sakana Fugu API (Beta)Multi-agent orchestration system that routes tasks across frontier foundation models (OpenAI, Anthropic, Go...10.9OctoAI Text Gen Inference APIOpenAI-compatible chat and text-completion endpoints serving open-source LLMs including Llama 2, Llama 3, M...8.2

Score breakdown

Frequency
50.9
log-scaled weighted occurrences
Breadth
1.6
spread across providers
Quality lift
45.5
mean composite of providers using it
Cohesion
29.2
strength of nearest seed neighbor

Related tags

Inference 42 co-occurrences Chat Completions 15 co-occurrences GPU 19 co-occurrences LLM 44 co-occurrences Completions 12 co-occurrences AI Inference 9 co-occurrences Embeddings 17 co-occurrences Anthropic Compatible 7 co-occurrences

Where this tag comes from

Api tag38
Provider tag34
Openapi tag3
Openapi op tag8

Cohort brief

Auto-generated

The 59 providers in the APIs.io catalog tagged OpenAI-Compatible, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
59
all scored
Mean Kin Score
37.6
+16.9 vs catalog 20.7
Mean Agent Readiness
21.3
+11.6 vs catalog 9.7
Spread
8.2–71.2
median 37.5 · σ 12.2
How the 59 split by band
Exemplar 1Strong 3Developing 19Thin 29Emerging 5Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 42.2 17.9 +24.3 59
Contract Quality 40.8 17.5 +23.3 59
Discoverability 75.4 60.4 +15 59
Access Clarity 34.8 22.3 +12.5 59
Operational Transparency 22.7 11.3 +11.4 59
Contract Governance 11 6.4 +4.6 59

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 34% 16% +18
MCP server (first-party) 7% 7% 0
Agent Skills 0% 0% 0
OAuth scopes 0% 9% -9
Security 98% 88% +10
Arazzo workflows 7% 2% +5
Governance rules 22% 13% +9

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 NVIDIA NIM 71.2
  2. 2 Cloudflare 62
  3. 3 Crusoe 60.6
  4. 4 Prime Intellect 55.1
  5. 5 Inference 53.9
  6. 6 RightNow AI 53.5
  7. 7 0G Labs 51.2
  8. 8 Lambda 50.9
  9. 9 OpenRelay 50.8
  10. 10 FriendliAI 49.9
Top by Agent Readiness
  1. 1 Cloudflare 44.5
  2. 2 OpenRelay 40.6
  3. 3 Crusoe 40.3
  4. 4 RouterPlex 37.2
  5. 5 Textcortex 37.2
  6. 6 Bifrost 34.9
  7. 7 FriendliAI 31.5
  8. 8 Inference 30.9
  9. 9 Kimi (Moonshot AI) 30.9
  10. 10 0G Labs 30.6
All 59 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

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  • find_cohortsEvery scored population of providers in the catalog.
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