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 →

Strong 1 Solid coverage with minor gaps

BudgetPixel Open AI APIThe OpenAI API from BudgetPixel — 1 operation(s) for openai.54.3

Developing 3 Usable, with meaningful gaps to close

TensorWave Open AI APIOpenAI-compatible inference endpoints proxied to vLLM.48.0 Novita AI Openai APIThe Openai API from Novita AI — 4 operation(s) for openai.46.5 Sarj AI Developer API Openai APIThe Openai API from Sarj AI Developer API — 1 operation(s) for openai.41.3

Thin 5 Limited public surface area

Azure OpenAI Service APIREST API access to OpenAI models including GPT-4, DALL-E, and Whisper with enterprise security.38.5 Ollama OpenAI Compatibility APIOllama provides compatibility with parts of the OpenAI API, allowing existing applications built for OpenAI...37.7 Haystack / deepset Openai APIThe openai API from Haystack / deepset — 8 operation(s) for openai.37.2 Ibotta Openai APIThe Openai API from Ibotta — 1 operation(s) for openai.32.0 ChatGPT (MCP Host)OpenAI's ChatGPT supports MCP through the Apps SDK and developer tooling documented at developers.openai.co...26.7

Emerging 1 Early or largely undocumented

OpenAI EvalsOpenAI Evals is the open-source framework released by OpenAI for evaluating large language models and LLM-b...20.5

Companies reaching this through an API (9)

These companies publish an API, specification or operation carrying “OpenAI” 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.

BudgetPixel Evals Haystack / deepset Ibotta Model Context Protocol (MCP) Novita AI Ollama Sarj AI Developer API TensorWave

Score breakdown

Frequency

39.1

log-scaled weighted occurrences

Breadth

0.2

spread across providers

Quality lift

50.2

mean composite of providers using it

Cohesion

2.7

strength of nearest seed neighbor

Where this tag comes from

Provider tag8

Api tag10

Openapi tag6

Openapi op tag18

Work with this as data

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

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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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This tag

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All tags

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As a scored cohort

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The distribution (Pro)

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  -H "X-API-Key: $APIS_IO_KEY"

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OpenAI

Providers using this tag (8)

APIs with this tag (10)