MODEL PROOF
Particle-1
NO LMARENA GENERAL SCORE
No LMArena general score is attached to this listing.
- Independent LMArena score
- No LMArena general score
- Context window
- 1.05M
- Maximum output
- 131.07K
- Input modalities
- text, image
- Output modalities
- text
- Published input price
- $0.050 / 1M tokens
- Published output price
- $0.500 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Price from Particle AI: the cheapest offer that is serving, at standard delivery, with at least 90% of the reference context and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $0.050/M |
|---|---|
| Output | $0.500/M |
| Cached input | $0.0030/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
1 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Particle AIparticle-ai/us Endpoint terms
| $0.050 | $0.500 | undeclared | 100.00% |
Independent scores
No independent benchmark has measured this model. Unrated is not a score of zero.
Capability
| Context window | 1M |
|---|---|
| Max output | 131K |
| Input modes | text, image |
| Tool use | yes |
| Reasoning | optional |
| Open weights | Unknown |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-11-05 |
| Quality data | unrated |
Particle-1 is a token-efficient agentic coding model from Particle AI, post-trained on DeepSeek V4.1 Flash. It is suited for software engineering work such as terminal workflows, codebase changes, and data...
Questions this page answers
What does Particle-1 cost?
$0.050/M in, $0.500/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Particle-1 have an independent quality score?
Particle-1 has no LMArena general score in this catalogue. Unrated is not a score of zero.
What beats Particle-1?
Particle-1 has no LMArena general score. Unrated is not a score of zero.
Does this page use Artificial Analysis scores for Particle-1?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
Does a missing score mean Particle-1 scored zero?
Unrated is not a score of zero.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/particle-ai__particle-1/)<a href="https://undominated.ai/models/particle-ai__particle-1/"><img src="https://undominated.ai/badge/particle-ai__particle-1.svg" alt="Particle-1 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/particle-ai__particle-1.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
older than the last deploy.
