Other

Reflection: Beam 1.0 501B A23B

reflection/beam-1.0-501b-a23b

canonical: reflection/beam-1.0-501b-a23b-20261016

Descriptionfrom OpenRouter

Beam 1.0 is Reflection's open-weight reasoning model for coding and long-horizon agentic workflows. It uses a sparse mixture-of-experts architecture with 501B total and 23B active parameters per token, and a...

Context length

1,048,576 tok

Max completion

943,718 tok

Knowledge cutoff

2026-06-30

Expires

—

Added to OpenRouter

10/16/2026

Cache last refreshed

11/12/2026

Primary modality

text->text

Source

OpenRouter

Input modalities

text

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0.0000003	$0.300
completion	0.000001	$1.00
input_cache_read	0.00000004	$0.040

Supported parameters(20)

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

OpenRouter page Hugging Face

Videos

47:51

Ranking major U.S. Open-Weights Models. (Where does Ripple 65B fit in?)

Nov 6, 2026 · YouTube

Rounds

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

Nov 6, 2026Small ModelsAWS Quick Ten87very goodin a video round answer
Nov 6, 2026Small ModelsRust Quick Ten83very goodin a video round answer
Nov 6, 2026Small ModelsTailwind Quick Ten100excellentin a video round answer
Nov 6, 2026Small ModelsPython Quick Ten97excellentin a video round answer
Oct 16, 2026CodingLast one standingin a video round answer
Oct 16, 2026CodingThree bugs and a liein a video round answer
Oct 16, 2026CodingThe queue that stoppedin a video round answer
Oct 16, 2026CodingPage two, againin a video round answer
Oct 16, 2026CodingThe same soldierin a video round answer
Oct 16, 2026CodingShip it in 1998in a video round answer
Oct 16, 2026CodingA hundred thousand of themin a video round answer
Oct 16, 2026CodingDrop the slinky85very goodin a video round answer
Oct 16, 2026CodingNeon Unicorn Frappuccino85very goodin a video round answer
Oct 16, 2026CodingTwo kilobytes70goodin a video round answer
Oct 16, 2026CodingBird Breakdance Animation70goodin a video round answer
Oct 16, 2026CodingThe Cybertruck rally95excellentin a video round answer
Oct 16, 2026CodingUmbrella In High Wind30badin a video round answer
Oct 16, 2026CodingEscalator Reversal Disaster50mediocrein a video round answer
Oct 16, 2026CodingSpinning cat meme70goodin a video round answer