aid: synthesis-ai
name: Synthesis AI
description: '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.'
url: https://raw.githubusercontent.com/api-evangelist/synthesis-ai/refs/heads/main/apis.yml
image: https://avatars.githubusercontent.com/u/55990723?v=4
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.23'
created: '2026-08-05'
modified: '2026-08-05'
tags:
- Company
- Synthetic Data
- Computer Vision
- Machine Learning
- Artificial Intelligence
- Digital Humans
- Training Data
- 3D
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: http://synthesis.ai/
- type: GitHubOrganization
  url: https://github.com/Synthesis-AI-Dev
- type: LinkedIn
  url: https://www.linkedin.com/company/synthesis-ai
- type: SecondaryMarket
  url: https://forgeglobal.com/synthesis-ai_stock/
- type: Packages
  url: packages/synthesis-ai-packages.yml
- type: Lifecycle
  url: lifecycle/synthesis-ai-lifecycle.yml
- type: DomainSecurity
  url: security/synthesis-ai-domain-security.yml
- type: Examples
  name: Human API job request (complex example, verbatim from the provider's GitHub)
  url: examples/synthesis-ai-human-api-job-complex-example.json
x-enrichment:
  date: '2026-08-05'
  status: minimal
  artifacts_added: 4
  pass: local-v1
x-coverage:
  state: none
  reason: defunct
  detail: Synthesis AI was dissolved during 2024-2025 — synthesis.ai now answers only
    over HTTP with a Gandi "parked by the owner" page (the identical 2332-byte body
    is returned for every path, including a control path, so every 200 is a soft-404),
    and the FaceAPI/HumanAPI documentation host docs.synthesis.ai has been removed
    from DNS entirely.
  evidence:
  - url: http://synthesis.ai/
    status: 200
  - url: http://synthesis.ai/openapi.json
    status: 200
  - url: http://synthesis.ai/this-path-does-not-exist-ae-control-12345
    status: 200
  - url: https://docs.synthesis.ai/
    status: 0
  checked: '2026-08-05'