# Thinking Machines Lab

**Canonical:** https://apis.io/providers/thinking-machines-lab/  
**Website:** https://thinkingmachines.ai  
**APIs profiled:** 0

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.

## Kin Score — 36.0 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 36.0).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 0.0 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 52.6 |
| Developer Ergonomics | 64.3 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

## Agent readiness — 14.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | yes |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## Security (3)

- **Thinking Machines Lab Authentication** — oauth2/openIdConnect · 2 schemes
- **Thinking Machines Lab Domain Security** — TLSv1.3 · DMARC
- **Thinking Machines Lab Vulnerability Disclosure** — security.txt · contact published

## Tags

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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/thinking-machines-lab/). Scores are computed from the provider's own public artifacts under a published rubric.