Thinking Machines Lab

Thinking Machines Lab is an AI research company (founded by Mira Murati) whose first product is Tinker — a cloud training API for researchers and developers. Tinker gives you full control over your data, algorithms, and models while it manages the GPU infrastructure: you author training loops locally with four primitives (forward_backward, optim_step, sample, save_state) and Tinker runs distributed LoRA fine-tuning across dense and Mixture-of-Experts models from 1B to 1T+ parameters. It supports SFT, reinforcement learning (GRPO, PPO), DPO, and distillation, shipped as an official Python SDK (tinker) plus the tinker-cookbook of recipes, a web console/playground, and OAuth 2.0 / OIDC authentication.

Thinking Machines Lab is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Machine-Learning, LLM, and Fine-Tuning.

Thinking Machines Lab’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, signup flow, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.9/100 thin ▬ flat Agent 14/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

0 APIs

Company Artificial Intelligence Machine-Learning LLM Fine-Tuning Model Training Developer Tools Reinforcement Learning

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 34.9/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 12.9 / 20

Access Clarity 8.9 / 20

Operational Transparency 6.8 / 13

Contract Governance 0.5 / 12

Discoverability 5.7 / 10

Agent readiness — 14/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Security Posture 3

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

Thinking Machines Lab Authentication

oauth2/openIdConnect · 2 schemes

SECURITY

Thinking Machines Lab Domain Security

TLSv1.3 · DMARC

SECURITY

Thinking Machines Lab Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Thinking Machines Lab Scopes

4 scopes · authorizationCode/deviceCode

4 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 6

Authentication, authorization, and security posture

Authentication

OAuthScopes

SecurityTxt

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

Deprecation

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: thinking-machines-lab
name: Thinking Machines Lab
description: 'Thinking Machines Lab is an AI research company (founded by Mira Murati) whose first product is Tinker — a cloud
  training API for researchers and developers. Tinker gives you full control over your data, algorithms, and models while
  it manages the GPU infrastructure: you author training loops locally with four primitives (forward_backward, optim_step,
  sample, save_state) and Tinker runs distributed LoRA fine-tuning across dense and Mixture-of-Experts models from 1B to 1T+
  parameters. It supports SFT, reinforcement learning (GRPO, PPO), DPO, and distillation, shipped as an official Python SDK
  (tinker) plus the tinker-cookbook of recipes, a web console/playground, and OAuth 2.0 / OIDC authentication.'
url: https://raw.githubusercontent.com/api-evangelist/thinking-machines-lab/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
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://thinkingmachines.ai/images/apple-touch-icon.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
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
- Fine-Tuning
- Model Training
- Developer Tools
- Reinforcement Learning
tags_raw:
- Company
- Ai
- Machine Learning
- LLM
- Fine Tuning
- Model Training
- Developer Tools
- Reinforcement Learning
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://thinkingmachines.ai
- type: DeveloperPortal
  url: https://tinker-docs.thinkingmachines.ai/
- type: Documentation
  url: https://tinker-docs.thinkingmachines.ai/
- type: APIReference
  url: https://tinker-docs.thinkingmachines.ai/tinker/api-reference/restclient/
- type: GettingStarted
  url: https://tinker-docs.thinkingmachines.ai/cookbook/quickstart/
- type: Blog
  url: https://thinkingmachines.ai/blog/
- type: GitHubOrganization
  url: https://github.com/thinking-machines-lab
- type: Support
  url: https://github.com/thinking-machines-lab/tinker-feedback
- type: Pricing
  url: https://tinker-docs.thinkingmachines.ai/tinker/models/
- type: SignUp
  url: https://auth.thinkingmachines.ai/sign-up
- type: TermsOfService
  url: https://thinkingmachines.ai/legal/terms/
- type: PrivacyPolicy
  url: https://thinkingmachines.ai/legal/privacy/
- type: StatusPage
  url: https://status.thinkingmachines.ai
- type: ChangeLog
  name: Tinker changelog
  url: changelog/thinking-machines-lab-changelog.yml
- type: Deprecation
  url: https://tinker-docs.thinkingmachines.ai/tinker/models/
- type: Packages
  url: packages/thinking-machines-lab-packages.yml
- type: SDKs
  url: packages/thinking-machines-lab-packages.yml
- type: Authentication
  url: authentication/thinking-machines-lab-authentication.yml
- type: OAuthScopes
  url: scopes/thinking-machines-lab-scopes.yml
- type: WellKnown
  url: well-known/thinking-machines-lab-well-known.yml
- type: SecurityTxt
  url: well-known/thinking-machines-lab-security.txt
- type: Conformance
  url: conformance/thinking-machines-lab-conformance.yml
- type: ErrorCatalog
  url: errors/thinking-machines-lab-error-codes.yml
- type: Lifecycle
  url: lifecycle/thinking-machines-lab-lifecycle.yml
- type: Conventions
  url: conventions/thinking-machines-lab-conventions.yml
- type: DataModel
  url: data-model/thinking-machines-lab-data-model.yml
- type: LLMsTxt
  url: llms/thinking-machines-lab-llms.txt
- type: DomainSecurity
  url: security/thinking-machines-lab-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/thinking-machines-lab-vulnerability-disclosure.yml
- type: Security
  url: https://thinkingmachines.ai/security/disclosure-policy/
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 16
  pass: local-v1
x-parent: thinking-machines
x-relationship: product

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