A newer version of this model is available: reflection/Beam-1.0-501B-A23B
Our token-count test matched Cat Jam to MISSINGNO. on all 24 phrases, a day before Reflection named both as previews of Beam.
By Stealth Models.
StealthMark results for the released Beam 1.0:
See the token-count comparison
Compare Beam with MiMo-V2.6-Flash
Facts as text
| Fact | Value |
|---|---|
| First seen | 13 Oct 2026 |
| Revealed | 16 Oct 2026 |
| Developer | Reflection AI |
| Context | 1,048,576 tokens |
| Input | Text |
| Tool calls | Yes |
| Speed in our tests | unknown |
| Access | Preview ended; the released Beam is available |
Run it
Beam 1.0 is open under Apache 2.0: reflection/Beam-1.0-501B-A23B. Even in 2-bit it needs about 130 GB. GGUF files: unsloth/Beam-1.0-501B-A23B-GGUF.
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Text and images: CC BY 4.0, stealthmodels.com.
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