Reflection·#36 of 349 on the current board·cheaper than #34 Qwen3.8 Max (0902)
Beam 1.0 501B A23B is a language model from Reflection. It ranks #36 of 349 on ModelCap's current board, with an Index score of 71.8, modeled from the publisher's launch results against measured models. Its score range of 58.5–85.1 spans positions #5–#83. It is listed at $0.25 per million input tokens and $1.00 per million output tokens from one provider. It reads up to 1M tokens of context, and its weights are openly downloadable.
Figures as of 16 Oct 2026, 16:00 UTC · download the public dataset · methodology
Structured rows reported in this exact model repository at the pinned revision below. They are the publisher talking about itself: never measured evidence, never a score input on their own. Rows marked as used were laddered against independently measured peers inside the launch-card channel of this model's modeled placement, with the replay-measured optimism haircut applied; the others played no part.
No general-family board lists this model yet. Its point estimate is the precision-weighted mean of every channel that spoke for it; each channel’s share is the weight it carried. Independent measurements replace this placement as boards list the model.
BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.
These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.
The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.
Experimental estimate. This layer predicts from admitted evidence and safe metadata only. It never enters ModelCap Score or rank.
Not yet published: the base model it derives from, admitted benchmark results, results across several capability areas, results from more than one source, a confident match to its benchmark entries, pinned evaluation dataset versions.
A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.
Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.
This model is visible because it is available in the live catalogue, but it has no trustworthy community result yet. ModelCap does not infer a quality score from price, features, or market activity.
OpenRouter weekly popularity across the full model catalogue.
Independent providers versus the model's open or closed cohort, weighted by uptime.
Hugging Face 30-day downloads for open models; neutral for closed models.
Time since first public availability, on a six-month half-life.
reflection/beam-1.0-501b-a23bOpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. OpenRouter metadata
Open weights. Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI.
Models within 3 places of #36 on the ModelCap Index.
Index score within 3 points of, or above, this model's, with a lower listed blended price (3:1 input:output).
Beam 1.0 501B A23B holds ModelCap Index position #36 of 349 ranked language models as of 16 October 2026, with an Index score of 71.8 (interval 58.5–85.1); evidence: modeled · peer benchmarks. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.
Beam 1.0 501B A23B is listed at $0.25 per 1M input tokens and $1.00 per 1M output tokens as of 16 October 2026. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $1.00 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.
Beam 1.0 501B A23B has a published context window of 1M tokens (1,048,576). The snapshot lists a 131,072 token catalogue-declared route output cap. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. The providers table lists each endpoint's context limit.
Open weights (apache-2.0). Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI. The repository is reflection/Beam-1.0-501B-A23B on Hugging Face.
One provider serves Beam 1.0 501B A23B through OpenRouter as of 16 October 2026: Nebius. Each provider's price, context limit, quantization and measured uptime are in the providers table above.
Beam 1.0 501B A23B's Index position rests on the evidence listed on this page; it has no result on the public boards ModelCap tracks as separate leaderboards as of 16 October 2026. The evidence panel names each source and its publication date.
Beam 1.0 501B A23B first appeared in the catalogue on 16 Oct 2026, with a published knowledge cutoff of 2026-06-30. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.