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Particle AI: Particle-1 (free) pricing

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… Particle AI: Particle-1 (free) from OpenRouter costs free per 1M input tokens and free per 1M output tokens. Context window 1,048,576 tokens.

API id particle-ai/particle-1:free · OpenRouter · source · updated 2026-11-13 · general-purpose

Free
Input / 1M tokens
Free
Output / 1M tokens
—
Cached input / 1M
1M
Context window

Particle AI: Particle-1 (free) specifications

Provider
OpenRouter
API id
particle-ai/particle-1:free
Model type
general-purpose
Context window
1M tokens
Max output
131K tokens
Currency
USD
Price source
Provider API
Last checked
2026-11-13

Tags

  • vision

What Particle AI: Particle-1 (free) costs in practice

Estimated cost at common usage volumes
WorkloadInput tokensOutput tokensEstimated cost
Short chat turn1,000500Free
Document summary50,0002,000Free
1M tokens in, 200K out1,000,000200,000Free

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does Particle AI: Particle-1 (free) cost per 1M tokens?
Particle AI: Particle-1 (free) costs free per 1M input tokens and free per 1M output tokens on the standard tier.
What is Particle AI: Particle-1 (free)'s context window?
Particle AI: Particle-1 (free) accepts up to 1,048,576 tokens in a single request, and can return up to 131,072 output tokens.
Where does this Particle AI: Particle-1 (free) price come from?
From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Other OpenRouter models

See all OpenRouter pricing →