$ diff beam-1-0 k2-horizon
Beam 1.0 vs K2 Horizon
Values come from Beam 1.0 and K2 Horizon, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
ReflectionBeam 1.0
- context
- 1M
- weights
- open
- $/M in
- —
- $/M out
- —
- context
- 524K
- weights
- open
- $/M in
- —
- $/M out
- —
What actually differs
- Context window
- Beam 1.0 takes 1M against 524K — modestly more room in a single request.
- Weights
- Both publish weights — Beam 1.0 under Apache 2.0, K2 Horizon under Apache 2.0 (weights and code). Check the licences rather than assuming they permit the same commercial use.
- Recency
- Beam 1.0 shipped 43 days after K2 Horizon (2026-10-16 vs 2026-09-03).
Full spec
| Attribute | Beam 1.0 | K2 Horizon |
|---|---|---|
| Developer | Reflection | Ifm |
| Released | 2026-10-16 | 2026-09-03 |
| Context window | 1M tokens | 524,288 (flagship 375B-A23B, native from midtraining onward) |
| Pricing | not recorded | not recorded |
| License | Apache 2.0 | Apache 2.0 (weights and code) |
| Availability | Open weights; Reflection API public beta; partner endpoints | Hugging Face (weights, code, checkpoints, training data where redistributable) |