MODELS / PARTICLE

Particle-1

Particle-1 is Particle AI’s model for agentic coding and software engineering, post-trained on DeepSeek V4.1 Flash to complete tasks with fewer tokens. It supports text and image inputs, reasoning, tool use, and implicit prompt caching.

TEXTREASONINGIMPLICIT-CACHINGTOOL-USEVISION
1.0M
CONTEXT WINDOW
131.1K
MAX OUTPUT TOKENS
$0.125
INPUT PRICE / 1M TOKENS
$0.5
OUTPUT PRICE / 1M TOKENS
QUICKSTART
PROTOCOL:
OPENAI COMPATIBLE
STREAMING:
SUPPORTED

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/particle/particle-1",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS
CONTEXT:
1.0M
PROVIDER:
PARTICLE
TYPE:
TEXT

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything Particle-1 supports, in one table.

MODEL ID
blackboxai/particle/particle-1
DEVELOPED BY
Particle
MODEL TYPE
Text
RELEASED
Oct 28, 2026
CONTEXT WINDOW
1.0M
MAX OUTPUT TOKENS
131.1K
INPUT MODALITIES
text, image
OUTPUT MODALITIES
text
INPUT PRICE
$0.125 / 1M tokens
OUTPUT PRICE
$0.5 / 1M tokens
CACHE READ
$0.015 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Not available (closed-weight model)
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning