Particle AI
Inference startup behind the Particle-1 coding model
particle.aiSan Francisco, United States
Particle AI is the trade name of Unmetered Machines, Inc., a San Francisco inference startup. It runs an OpenAI-compatible API platform and released Particle-1, a token-efficient agentic coding model post-trained from a DeepSeek base.
- Type
- Private company
- AI lab
- Inference provider
- 4 hosted endpoints
| Model | Endpoint | Context | Input /M | Output /M | Cached input /M | Cache write /M | Uptime 1d |
|---|---|---|---|---|---|---|---|
 DeepSeek V4.1 Flash 1017 | particle-ai/us | 1M | $0.06 | $0.50 | $0.006 | — | 100.00% |
| DeepSeek V4.1 Flash 1017 | particle-ai/us/flex | 1M | $0.03 | $0.25 | $0.003 | — | 100.00% |
 GLM 5.3 Flash | particle-ai/nvfp4 | 1M | $0.13 | $0.50 | $0.04 | — | 99.31% |
| Particle-1 | particle-ai/us | 1M | $0.05 | $0.50 | $0.003 | — | 100.00% |