# Synthesis AI

**Canonical:** https://apis.io/providers/synthesis-ai/  
**Website:** http://synthesis.ai/  
**APIs profiled:** 0

Synthesis AI was a San Francisco synthetic-data company, founded in 2019 by Yashar Behzadi, that generated photorealistic, pixel-perfectly labeled images of humans for training computer-vision models. It sold that capability as an API: FaceAPI for labeled facial imagery and, from November 2021, HumanAPI for whole-body 3D digital humans, plus an Identities API for selecting subjects. Jobs were described as JSON documents (identities, expressions, gaze, head turn, hair, accessories, bodies and clothing, gesture animations, camera and light rigs, HDRI environments) and submitted through a command-line client or web console, with rendered output downloaded by job ID. The company raised a $17M Series A in 2022 on more than $24M total funding and was dissolved during 2024-2025. Its API is gone: synthesis.ai is a parked Gandi holding page reachable only over HTTP, and docs.synthesis.ai and api.synthesis.ai no longer resolve. What survives publicly is the Synthesis-AI-Dev GitHub organization (17 public repositories, including the Human API input-JSON appendix and the client tooling) and the official synthesisai package on PyPI.

## Kin Score — 5.7 / 100 (minimal)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 5.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |

## Agent readiness — 1.6 (human-only)

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

## Security (1)

- **Synthesis Ai Domain Security** — no transport/DNS hardening detected

## Tags

Company, Synthetic Data, Computer Vision, Machine Learning, Artificial Intelligence, Digital Humans, Training Data, 3D

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