Beam 1.0 501B A23B
Beam 1.0 501B A23B is developed by Reflection, released 2026-10-05.
Model ID: beam-1.0-501b-a23b
Input price
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Output price
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Blended price
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Epoch Capabilities Index (ECI)
No public data yet
Epoch Mock AIME accuracy
No public data yet
Epoch FrontierMath (T1–3) accuracy
No public data yet
Arena text rating
1435.1
60th percentile of 164 models with an Arena text rating score
LMArena · as of 2026-11-06
Arena coding rating (human preference votes, not task accuracy)
1507.4
LMArena · as of 2026-11-06
Arena math rating
1481.4
LMArena · as of 2026-11-06
Arena WebDev rating
1436.9
LMArena · as of 2026-11-06
No API price is published for this model in our data sources (models.dev,
LiteLLM), so we show — rather than guess. It may be unreleased via API, open-weights
only, or simply not tracked yet.
See all of Reflection's models on its provider page, or browse the full model directory. Full source licenses and sync dates: /data-sources/.