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, Ai, 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
34.6/100 thin ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
0 APIs
CompanyAiMachine LearningLLMFine TuningModel TrainingDeveloper ToolsReinforcement Learning

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 34.6/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 11.7 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 7.2 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 24/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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 4 / 4
Consent & Bot Identity 3 / 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/thinking-machines-lab: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

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
Conformance
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conventions
Conventions
 DataModel
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
Authentication
 OAuthScopes
OAuthScopes
 SecurityTxt
SecurityTxt
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 4

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 Deprecation
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)

apis.yml Raw ↑ 
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
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: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- 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