Particle-1
particle-1
Particle-1 is Particle AI’s coding and data-engineering model, post-trained on DeepSeek V4.1 Flash. It accepts text and images, supports tool calling, and offers a shared 1,048,576-token context window with up to 131,072 output tokens, including reasoning. Reasoning defaults to high and can be turned off. JSON formatting is supported; strict JSON-schema enforcement is not guaranteed.
Specification
most-agreed values
Context
1M
Max output
131K
Released
2026-10-29
Knowledge cutoff
—
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.25
Output
$1.00
Cache read
$0.03
Available from 4 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| kilo · particle-ai | $0.05 | $0.50 | $0.003 | — | 1M | 131K | — |
| openrouter · particle-ai | $0.05 | $0.50 | $0.003 | — | 1M | 131K | — |
| vercel · particle | $0.125 | $0.50 | $0.015 | — | 1M | 131K | — |
| nano-gpt · particle-ai | $0.25 | $1.00 | $0.03 | — | 1M | 131K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-10-29 | kilo · particle-ai | Cache read | $0.03 |
| 2026-10-31 | kilo · particle-ai | Cache read | $0.003 |
| 2026-10-29 | openrouter · particle-ai | Cache read | $0.03 |
| 2026-10-31 | openrouter · particle-ai | Cache read | $0.003 |
| 2026-10-29 | kilo · particle-ai | Input | $0.25 |
| 2026-10-31 | kilo · particle-ai | Input | $0.05 |
| 2026-10-29 | openrouter · particle-ai | Input | $0.25 |
| 2026-10-31 | openrouter · particle-ai | Input | $0.05 |
| 2026-10-29 | kilo · particle-ai | Output | $1.00 |
| 2026-10-31 | kilo · particle-ai | Output | $0.50 |
| 2026-10-29 | openrouter · particle-ai | Output | $1.00 |
| 2026-10-31 | openrouter · particle-ai | Output | $0.50 |