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 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
49.3/100 developing ▬ flat Agent 72/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
3 APIs 1 MCP Servers
CompanyArtificial IntelligenceMachine LearningLLMInferenceServerlessGenerative AIDeveloper ToolsOpenAI CompatibleRWKV

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 49.3/100 · developing
Contract Quality 14.2 / 25
Developer Ergonomics 13.5 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 72/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 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
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

MCP Servers 1

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

recursal-ai-inc-mcp.yml

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 1

Properties that don't map to a standard resource type

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: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- 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: 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