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Particle AI: Particle-1 (free)

particle-ai/particle-1:free

canonical: particle-ai/particle-1-20261027

Descriptionfrom OpenRouter

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...

Context length

1,048,576 tok

Max completion

131,072 tok

Knowledge cutoff

—

Expires

—

Added to OpenRouter

10/28/2026

Cache last refreshed

11/12/2026

Primary modality

text+image->text

Source

OpenRouter

Input modalities

textimage

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0	—
completion	0	—

Supported parameters(19)

frequency_penaltyinclude_reasoninglogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

OpenRouter page

Particle AI: Particle-1 (free)

Descriptionfrom OpenRouter

Pricing

Supported parameters(19)

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