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OpenAI-Compatible

Score 25.9 / 100 34 providers +27 via APIs 39 APIs Search apis.io →

Providers using this tag (34)

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

Exemplar 1 Complete, well-documented, and agent-ready
NVIDIA NIMArtificial IntelligenceInferenceMicroservicesLLM3 APIs68.3
Developing 14 Usable, with meaningful gaps to close
RightNow AICompanyArtificial IntelligenceMachine-LearningLLM Inference1 API53.1BifrostAI GatewayLLMLoad BalancingOpen-Source4 APIs50.20G LabsArtificial IntelligenceAI InferenceLLMGPU Compute2 APIs49.1Multiverse ComputingArtificial IntelligenceMachine-LearningLLM InferenceModel Compression2 APIs48.4FriendliAICompanyInfrastructureArtificial IntelligenceMachine-Learning1 API48.2OpenRelayCompanyGPUInferenceArtificial Intelligence1 API47.9Novita AIArtificial IntelligenceLLMInferenceGPU1 API47.4Standard ComputeLLM APIFlat RateSubscriptionAI Agents1 API46.2RouterPlexLLMArtificial IntelligenceAI GatewayInference1 API44.5DiscountedTokens APIArtificial IntelligenceLLMGenerative AI Inference1 API43.8ToAPIsAI APILLM/AI gatewaymodel aggregation1 API43.7FlexAICompanyAi MlArtificial IntelligenceMachine-Learning1 API43.3WanAPIsLLM GatewayAI API GatewayModel Marketplace1 API40.9Adaptive MLCompanyAi MlLLMFine-Tuning1 API40.4
Thin 18 Limited public surface area
nexos.aiCompanyArtificial IntelligenceLLMAI Gateway1 API39.1RekaArtificial IntelligenceMulti-ModalLLMVision1 API38.1Kimi (Moonshot AI)LLMLong ContextArtificial Intelligence1 API37.2Secton APIArtificial IntelligenceInferenceLLMChat Completions1 API37.2LinkAGI Model APIArtificial IntelligenceLLMAI API GatewayRelay1 API35.7TextcortexCompanyArtificial IntelligenceText GenerationLLM1 API35.2BasetenArtificial IntelligenceMachine-LearningInferenceDeployment2 APIs34.3PositronArtificial IntelligenceAI Inferenceinference-hardwareAI Accelerators3 APIs34.1CometAPIArtificial IntelligenceAggregatorAudioChat1 API34.0DeepInfraArtificial IntelligenceLLMInferenceServerless1 API33.9Recursal AI, Inc.CompanyArtificial IntelligenceMachine-LearningLLM3 APIs33.5TaalasCompanyArtificial IntelligenceAI InferenceSemiconductors3 APIs33.3WeaveAPI - OpenAI-compatible AI API GatewayArtificial IntelligenceLLMAI InferenceAPI Gateway2 APIs33.2SiliconFlowArtificial IntelligenceLLMInferenceOpen-Source1 API32.7OpenPipeArtificial IntelligenceLLMFine-TuningDistillation1 API29.2WomboCompanyArtificial IntelligenceMachine-LearningInference1 API28.8vLLMLLMInferenceOpen-SourceGPU1 API28.4AsterlabCompanyArtificial IntelligenceMachine-LearningLLM1 API26.5
Emerging 1 Early or largely undocumented
Infini-AI (无问芯穹)CompanyArtificial IntelligenceMachine-LearningLLM1 API12.4

APIs with this tag (39)

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...68.3NVIDIA NIM Embeddings APIOpenAI-compatible embeddings endpoint (/v1/embeddings) backed by NVIDIA NeMo Retriever text embedding model...68.3NVIDIA NIM Models APIOpenAI-compatible model catalog endpoint (/v1/models) returning the list of models served by the NIM endpoi...68.3
Strong 2 Solid coverage with minor gaps
Cloudflare OpenAI Compatible APIOpenAI-compatible endpoints for chat completions, text completions, embeddings, and responses.66.3Prime Intellect Inference APIOpenAI-compatible inference API for hosted frontier and open models served at api.pinference.ai. Supports s...56.5
Developing 13 Usable, with meaningful gaps to close
Crusoe Managed Inference APIOpenAI-compatible inference API from the Crusoe Intelligence Foundry. Send chat/completions and embeddings ...53.6Inference.net APIOpenAI-compatible inference API for open-source, frontier, and custom language models — chat completions, b...53.6Lambda Inference APILambda Inference API is an OpenAI-compatible REST gateway at https://api.lambda.ai/v1 that serves hosted op...49.5OpenRelay Inference APIOpenAI-compatible chat completions API (POST /v1/chat/completions) and, for supporting models, an Anthropic...47.9AkashML Inference APIOpenAI-compatible AI inference API providing access to open-source LLMs hosted on decentralized compute acr...46.3Furiosa-LLM OpenAI-Compatible ServerThe HTTP server started by `furiosa-llm serve `. It hosts a single model on RNGD NPUs and exposes an Open44.1DiscountedTokens APIOpenAI/Anthropic-compatible REST API for LLM inference with prepaid Bearer-key authentication. Documents /c...43.8ToAPIs APIOpenAI-compatible REST API covering chat/completions, image generation, video generation, and model listing...43.7W&B Serverless Inference (CoreWeave)OpenAI-compatible inference API for hosted open-source foundation models, running on CoreWeave GPU infrastr...43.4vLLM OpenAI-Compatible APIvLLM is a high-throughput and memory-efficient inference engine for LLMs, implementing PagedAttention for e...42.7Dartmouth Chat AI APIAn OpenAI- and Anthropic-compatible API over large language, embedding and reranking models running on Dart...41.8WanAPIs Unified AI APIOpenAI-compatible REST API gateway aggregating GPT, Claude, Gemini, DeepSeek, plus image, video, and audio ...40.9Cerebrium OpenAI Compatible APIThe OpenAI Compatible API from Cerebrium — 2 operation(s) for openai compatible.40.5
Thin 15 Limited public surface area
PLaMo APIThe PLaMo API is Preferred Networks' cloud service for its domestically developed PLaMo large language mode...39.2King's e-Research AI Hub APIAn OpenAI-compatible LLM inference API operated by King's e-Research for researchers, students and staff. P...36.8TUD:AI LLM APIAn OpenAI-compatible LLM inference API operated by ZIH and ScaDS.AI Dresden/Leipzig for TU Dresden staff, s...36.8LinkAGI Model API OpenAI compatible APIOpenAI-compatible Chat Completions and Responses routes.35.7IO Intelligence APIOpenAI-compatible inference API for open-source AI models hosted on io.net's decentralized GPU network. Exp...35.6Lingyiwanwu Platform APIOpenAI-compatible chat completions and vision endpoints for the Yi model family. Base URL https://api.lingy...33.9EigenAIEigenAI exposes deterministic, verifiable LLM inference over an OpenAI-compatible API surface, with executi...33.3WeaveAPI OpenAI-compatible APIOpenAI-wire-compatible REST API for chat completions, responses-style requests and the model catalog, authe...33.2DashScope (Alibaba Cloud Model Studio) APINative Alibaba Cloud Model Studio API serving the Qwen model family. Provides chat completions, multimodal ...32.8Glama AI GatewayOpenAI-compatible LLM gateway exposing 90+ models from OpenAI, Anthropic, Google, DeepSeek, Mistral, xAI, M...30.3Volcano Engine Ark APIOpenAI-compatible chat, responses, embedding, batch, image (Seedream), video (Seedance), 3D, and TTS APIs s...30.2Hyperbolic Serverless Inference APIOpenAI-compatible inference API for 25+ open-source models. Surfaces include text chat, vision, image gener...30.0Mango LLMBoost Inference Server APILLMBoost is MangoBoost's enterprise LLM inference server. It serves the OpenAI REST API on /v1 so an existi...29.8vLLM OpenAI-Compatible ServerOpenAI-compatible REST API exposed by `vllm serve`. Endpoints include /v1/chat/completions, /v1/completions...28.4Aster 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
Cumulus 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...25.6NVIDIA DGX Cloud Lepton APIManaged AI platform API exposing model endpoints (HTTP server with OpenAI-compatible chat surface), dev ses...14.1Infini-AI GenStudio Large-Model Service (MaaS)OpenAI-compatible model-inference API over Infini-AI's catalog of open- and closed-source models. Bearer (A...12.4Sakana Fugu API (Beta)Multi-agent orchestration system that routes tasks across frontier foundation models (OpenAI, Anthropic, Go...11.3
Unrated 1 Not yet scored
OctoAI Text Gen Inference APIOpenAI-compatible chat and text-completion endpoints serving open-source LLMs including Llama 2, Llama 3, M...

Companies reaching this through an API (27)

These companies publish an API, specification or operation carrying “OpenAI-Compatible” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

01.AI Akash Network ByteDance Doubao Cerebrium Cloudflare Crusoe Cumulus Labs Dartmouth College EigenLayer FuriosaAI Glama Hyperbolic Inference io.net King's College London Lambda Lepton AI MangoBoost Nebius OctoAI Preferred Networks Prime Intellect Qwen Sakana AI Scalable Inference Serving TU Dresden Weights and Biases

Score breakdown

Frequency
50.4
log-scaled weighted occurrences
Breadth
0.9
spread across providers
Quality lift
44.4
mean composite of providers using it
Cohesion
28.1
strength of nearest seed neighbor

Related tags

Inference 42 co-occurrences Chat Completions 12 co-occurrences GPU 19 co-occurrences Anthropic Compatible 8 co-occurrences LLM 50 co-occurrences Completions 12 co-occurrences Models 24 co-occurrences AI Inference 7 co-occurrences

Where this tag comes from

Api tag39
Provider tag34
Openapi tag3
Openapi op tag8

Cohort brief

Auto-generated

The 34 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
34
all scored
Mean Kin Score
39.2
+15.1 vs catalog 24.1
Mean Agent Readiness
24.7
+12.6 vs catalog 12.1
Spread
12.4–68.3
median 37.7 · σ 9.7
How the 34 split by band
Exemplar 1Strong 0Developing 14Thin 18Emerging 1Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 44.1 20.3 +23.8 34
Developer Ergonomics 46.1 23.6 +22.5 34
Discoverability 75.4 61.3 +14.1 34
Access Clarity 38.9 26.7 +12.2 34
Operational Transparency 25 14.1 +10.9 34
Contract Governance 7 6.5 +0.5 34

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) 12% 10% +2
MCP server (first-party) 12% 13% -1
Agent Skills 0% 0% 0
OAuth scopes 0% 11% -11
Security 100% 96% +4
Arazzo workflows 6% 2% +4
Governance rules 21% 14% +7

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 68.3
  2. 2 RightNow AI 53.1
  3. 3 Bifrost 50.2
  4. 4 0G Labs 49.1
  5. 5 Multiverse Computing 48.4
  6. 6 FriendliAI 48.2
  7. 7 OpenRelay 47.9
  8. 8 Novita AI 47.4
  9. 9 Standard Compute 46.2
  10. 10 RouterPlex 44.5
Top by Agent Readiness
  1. 1 OpenRelay 40.6
  2. 2 FriendliAI 37.9
  3. 3 RouterPlex 37.2
  4. 4 Textcortex 37.2
  5. 5 Novita AI 35.8
  6. 6 Bifrost 34.9
  7. 7 ToAPIs 30.9
  8. 8 Kimi (Moonshot AI) 30.9
  9. 9 0G Labs 30.6
  10. 10 NVIDIA NIM 28.8
All 34 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 19 September 2026, across 27397 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.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

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The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/openai-compatible/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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