Particle AI: Particle-1

particle-ai/particle-1

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...

Price

Input$0.25

per 1M tokens

Output$1

per 1M tokens

Compare this model

Providers

Each row is one seller. Prices are the published rate from that source. A dash means that source did not publish the amount. Sorted by a 3:1 blend of input and output.

Provider	Tag	Quant	Input	Output	Context	Uptime	Status	Source
Particle AI	particle-ai	—	$0.25/1M	$1/1M	1.0M	100%	Live	openrouter-endpoints

Monthly bill

Token models use the token counts. Image, video, and audio models use units times the flat rate.

Input tokens Output tokens Units

$1.25 at list price for this workload

Cache

Cache read$0.03

per 1M tokens

Every rate

Unit	Input	Output	Flat	Confidence
token	$0.25/1M	$1/1M	Not published—	official

Price history

Particle AI: Particle-1

input or flat output

Daily snapshots

UTC date	Unit	Input	Output	Flat
2026-10-29	token	$0.25	$1	Not published—
2026-10-30	token	$0.25	$1	Not published—

Alternatives

ByteDance Seed: Seed 1.6$0.25/1M · Compare
ByteDance Seed: Seed-2.0-Lite$0.25/1M · Compare
ByteDance/Seed-1.8$0.25/1M · Compare
Claude 3 Haiku$0.25/1M · Compare
deepseek-ai/DeepSeek-V3.1$0.25/1M · Compare
DeepSeek: DeepSeek V3.1$0.25/1M · Compare

Parameters (19)

frequency_penaltyinclude_reasoninglogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

Call this model

OpenRouter id particle-ai/particle-1. InferenceList does not send the request.

curl

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"particle-ai/particle-1","messages":[{"role":"user","content":"Hello"}]}'

JavaScript

await fetch("https://openrouter.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + process.env.OPENROUTER_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "particle-ai/particle-1",
    messages: [{ role: "user", content: "Hello" }],
  }),
});

Python

import os, json, urllib.request
req = urllib.request.Request(
    "https://openrouter.ai/api/v1/chat/completions",
    data=json.dumps({"model": "particle-ai/particle-1", "messages": [{"role": "user", "content": "Hello"}]}).encode(),
    headers={"Authorization": "Bearer " + os.environ["OPENROUTER_API_KEY"], "Content-Type": "application/json"},
)
print(urllib.request.urlopen(req).read().decode())

JSON · History JSON