Recursal AI, Inc. website screenshot

Recursal AI, Inc.

Recursal AI, Inc. operates Featherless AI, a serverless AI inference platform that provides unified, OpenAI-compatible API access to tens of thousands of open-weight large language models sourced from Hugging Face. A single API key and base URL (https://api.featherless.ai/v1) give developers drop-in access to models ranging from small 7B instruct models to 405B-plus parameter models, under flat-rate, concurrency-based subscriptions with unlimited monthly requests and a no-logging policy on prompts and chat history. The platform is built by researchers who contribute to RWKV, a Linux Foundation project, and has raised a $20M Series A. Recursal AI was surfaced as a portfolio company of 500 Global and enriched by the API Evangelist pipeline.

Recursal AI, Inc. publishes 3 APIs on the APIs.io network: Account API, Chat API, and Models API. Tagged areas include Company, Artificial Intelligence, Machine-Learning, LLM, and Inference.

Recursal AI, Inc.’s developer surface includes documentation, API reference, getting-started guide, quickstart, pricing, signup flow, engineering blog, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub
47.4/100 developing ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
3 APIs 1 MCP Servers
CompanyArtificial IntelligenceMachine-LearningLLMInferenceServerlessGenerative AIDeveloper ToolsOpenAI-CompatibleRWKV

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 47.4/100 · developing
Contract Quality 14.2 / 25
Developer Ergonomics 11.8 / 20
Access Clarity 8.9 / 20
Operational Transparency 2.4 / 13
Contract Governance 2.0 / 12
Discoverability 8.2 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/recursal-ai-inc: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Recursal AI, Inc. Account API

Plan and concurrency information

Recursal AI, Inc. Chat API

OpenAI-compatible chat and text completion generation

Recursal AI, Inc. Models API

Model catalog and metadata

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Featherless AI Serverless Inference Account API

OPEN COLLECTION

Featherless AI Serverless Inference Account Chat API

OPEN COLLECTION

Featherless AI Serverless Inference Account Models API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Recursal AI, Inc. MCP Server

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Recursal Ai Inc Rate Limits

0 limits

RATE LIMITS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Recursal Ai Inc Authentication

http · 1 scheme

SECURITY

Recursal Ai Inc Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Recursal Ai Inc Agentic Access

5 operations · 3 acting

5 operations · 3 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Quickstart
Quickstart
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 CompanyWebsite
CompanyWebsite
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

Overlay
Overlay
 Models
Models

Source (apis.yml)

apis.yml Raw ↑ 
aid: recursal-ai-inc
name: Recursal AI, Inc.
description: Recursal AI, Inc. operates Featherless AI, a serverless AI inference platform that provides unified, OpenAI-compatible
  API access to tens of thousands of open-weight large language models sourced from Hugging Face. A single API key and base
  URL (https://api.featherless.ai/v1) give developers drop-in access to models ranging from small 7B instruct models to 405B-plus
  parameter models, under flat-rate, concurrency-based subscriptions with unlimited monthly requests and a no-logging policy
  on prompts and chat history. The platform is built by researchers who contribute to RWKV, a Linux Foundation project, and
  has raised a $20M Series A. Recursal AI was surfaced as a portfolio company of 500 Global and enriched by the API Evangelist
  pipeline.
url: https://raw.githubusercontent.com/api-evangelist/recursal-ai-inc/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/6979c6c70c21b50639123793/69a171cf1a87499ba814df9c_OG%20Image_%20Home.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Artificial Intelligence
- Machine-Learning
- LLM
- Inference
- Serverless
- Generative AI
- Developer Tools
- OpenAI-Compatible
- RWKV
tags_raw:
- Company
- Artificial Intelligence
- Machine Learning
- LLM
- Inference
- Serverless
- Generative AI
- Developer Tools
- OpenAI Compatible
- RWKV
apis:
- aid: recursal-ai-inc:recursal-ai-inc-account-api
  name: Recursal AI, Inc. Account API
  description: Plan and concurrency information
  humanURL: https://featherless.ai/docs/overview
  baseURL: https://api.featherless.ai/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/recursal-ai-inc-account-api-openapi.yml
  - type: Documentation
    url: https://featherless.ai/docs/api-overview-and-common-options
- aid: recursal-ai-inc:recursal-ai-inc-chat-api
  name: Recursal AI, Inc. Chat API
  description: OpenAI-compatible chat and text completion generation
  humanURL: https://featherless.ai/docs/overview
  baseURL: https://api.featherless.ai/v1
  tags:
  - Chat
  properties:
  - type: OpenAPI
    url: openapi/recursal-ai-inc-chat-api-openapi.yml
  - type: Documentation
    url: https://featherless.ai/docs/api-overview-and-common-options
- aid: recursal-ai-inc:recursal-ai-inc-models-api
  name: Recursal AI, Inc. Models API
  description: Model catalog and metadata
  humanURL: https://featherless.ai/docs/overview
  baseURL: https://api.featherless.ai/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/recursal-ai-inc-models-api-openapi.yml
  - type: Documentation
    url: https://featherless.ai/docs/api-overview-and-common-options
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/recursal-ai-inc-featherless-overlay.yaml
- type: DomainSecurity
  url: security/recursal-ai-inc-domain-security.yml
- type: Website
  url: https://featherless.ai
- type: CompanyWebsite
  url: https://recursal.ai
- type: DeveloperPortal
  url: https://featherless.ai/docs/overview
- type: Documentation
  url: https://featherless.ai/docs/overview
- type: APIReference
  url: https://featherless.ai/docs/api-overview-and-common-options
- type: GettingStarted
  url: https://featherless.ai/docs/getting-started
- type: Quickstart
  url: https://featherless.ai/docs/quickstart-guide
- type: Pricing
  url: https://featherless.ai/#pricing
- type: SignUp
  url: https://featherless.ai/register
- type: TermsOfService
  url: https://featherless.ai/terms
- type: PrivacyPolicy
  url: https://featherless.ai/privacy
- type: Blog
  url: https://featherless.ai/blog
- type: Support
  url: https://featherless.ai/discord
- type: GitHubOrganization
  url: https://github.com/recursal
- type: StatusPage
  url: https://featherless.ai/status
- type: Models
  url: https://featherless.ai/models
- type: LLMsTxt
  url: llms/recursal-ai-inc-llms.txt
- type: Authentication
  url: authentication/recursal-ai-inc-authentication.yml
- type: Conventions
  url: conventions/recursal-ai-inc-conventions.yml
- type: RateLimits
  url: rate-limits/recursal-ai-inc-rate-limits.yml
- type: ErrorCatalog
  url: errors/recursal-ai-inc-problem-types.yml
- type: Lifecycle
  url: lifecycle/recursal-ai-inc-lifecycle.yml
- type: Conformance
  url: conformance/recursal-ai-inc-conformance.yml
- type: DataModel
  url: data-model/recursal-ai-inc-data-model.yml
- type: MCPServer
  url: mcp/recursal-ai-inc-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/recursal-ai-inc-agentic-access.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 17
  pass: local-v1