Other

Particle AI: Particle-1

particle-ai/particle-1

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	0.00000005	$0.050
completion	0.0000005	$0.500
input_cache_read	0.000000003	$0.003

Supported parameters(19)

frequency_penaltyinclude_reasoninglogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

OpenRouter page

Videos

38:58

Testing Particle-1: a post-trained DeepSeek V4.1 Flash specializing in coding and efficiency

Oct 28, 2026 · YouTube

Rounds

20 answersin this database. A round opens every model's answer to the same prompt.

Oct 28, 2026Model FingerprintsPick Ten Random Thingsin a video round answer
Oct 28, 2026Model FingerprintsName Ten Story Charactersin a video round answer
Oct 28, 2026Model FingerprintsTen Canvas Animation Ideasin a video round answer
Oct 28, 2026CodingThe same soldierin a video round answer
Oct 28, 2026CodingSpinning cat memein a video round answer
Oct 28, 2026CodingShip it in 1998in a video round answer
Oct 28, 2026CodingPage two, againin a video round answer
Oct 28, 2026CodingLast one standingin a video round answer
Oct 28, 2026CodingA hundred thousand of themin a video round answer
Oct 28, 2026CodingThe spec that can't be builtin a video round answer
Oct 28, 2026CodingDropped Garden Hose Whipin a video round answer
Oct 28, 2026CodingTablecloth Yank Trickin a video round answer
Oct 28, 2026CodingStadium Exit Gate Bottleneckin a video round answer
Oct 28, 2026CodingNeon Unicorn Frappuccinoin a video round answer
Oct 28, 2026CodingTwo kilobytesin a video round answer
Oct 28, 2026CodingThe Cybertruck rallyin a video round answer
Oct 28, 2026CodingDrop the slinkyin a video round answer
Oct 28, 2026CodingBird Breakdance Animationin a video round answer
Oct 28, 2026CodingEscalator Reversal Disasterin a video round answer
Oct 28, 2026CodingUmbrella In High Windin a video round answer