What is the context window of Particle AI: Particle-1?

Particle AI: Particle-1 supports a context window of 1.0M tokens.

Is Particle AI: Particle-1 free to use?

Particle AI: Particle-1 is a paid model. It costs $0.250 per million input tokens and $1.00 per million output tokens.

How is LLM API pricing calculated?

LLM pricing has two components: input tokens (everything you send) and output tokens (what the model generates). Total cost = (prompt tokens × input rate + output tokens × output rate) / 1,000,000 × number of requests.

Particle AI: Particle-1 API Pricing — $0.250 Input / $1.00 Output per 1M Tokens

Q: How much does Particle AI: Particle-1 cost?

Particle AI: Particle-1 costs $0.250 per million input tokens and $1.00 per million output tokens via OpenRouter. Pricing was last updated Oct 29, 2026.

Particle AI: Particle-1 by Particle Ai — $0.250 input / $1.00 output per 1M tokens via OpenRouter. Context: 1.0M tokens. Pricing last updated Oct 29, 2026.

Input / 1M tokens

$0.250

Output / 1M tokens

$1.00

Provider

Particle Ai

Context window

1.0M tokens

Via

OpenRouter

Cost at common usage volumes

Usage	Daily	Monthly
Chatbot (100/day)	$0.138	$4.12
Small app (1K/day)	$0.750	$22.50
Mid-scale (10K/day)	$10.00	$300.00
Large scale (100K/day)	$225.00	$6750.00

Model ID: particle-ai/particle-1
Data source: OpenRouter public API — updated Oct 29, 2026.

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About Particle AI: Particle-1

Particle AI: Particle-1 is an LLM developed by Particle Ai. Input costs $0.250 per million tokens and output costs $1.00 per million tokens via OpenRouter. It supports a context window of 1.0M tokens.

Pricing Details

Via the OpenRouter API:

Input tokens: $0.250 per 1 million tokens
Output tokens: $1.00 per 1 million tokens

A token is roughly 0.75 words. For context: a typical user message of 100 words is approximately 133 tokens; a 500-word system prompt is about 650 tokens.

How Much Does Particle AI: Particle-1 Cost?

For a typical chatbot application (1,000 requests/day, 1,000 prompt tokens and 500 output tokens per request):

Daily cost: $0.7500
Monthly cost: $22.500

Accessing Particle AI: Particle-1 via OpenRouter

OpenRouter provides a unified API for 200+ LLMs including Particle AI: Particle-1. You can use it with any OpenAI-compatible SDK by setting the base URL to https://openrouter.ai/api/v1 and using your OpenRouter API key. The model ID is particle-ai/particle-1.

Compare Particle AI: Particle-1 with Other Models

Use the AI Model Cost Comparison tool to compare Particle AI: Particle-1 against GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, or any other model side by side. Or use the LLM API Cost Calculator to browse all 456+ models sorted by cost for your specific usage.

Frequently Asked Questions

Yes. Particle AI: Particle-1 is available on OpenRouter with the model ID particle-ai/particle-1. OpenRouter provides a unified API compatible with OpenAI's SDK format.