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by Reflection

Reflection: Beam 1.0 501B A23B.

text closed 1M ctx
Cheapest input
$0.25/M
on OpenRouter
Cheapest output
$1.0/M
on OpenRouter
Hosted equiv.
~$0.36/hr
@ 100 tok/s on 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...

Hosted API only

No self-host path — closed weights.

Reflection: Beam 1.0 501B A23B's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenRouter api aggregator $0.25 $1.0 Launch ↗
Together AI hosted inference $0.4 $1.2 Launch ↗
Sources

Official references.

Hugging Face ↗
FAQ

Frequently asked.

How do I run Reflection: Beam 1.0 501B A23B?
Reflection: Beam 1.0 501B A23B is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access Reflection: Beam 1.0 501B A23B?
Reflection: Beam 1.0 501B A23B is available via Together AI, OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run Reflection: Beam 1.0 501B A23B?
API pricing starts at $1.0/M input tokens and $3.0/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is Reflection: Beam 1.0 501B A23B open-source or proprietary?
Reflection: Beam 1.0 501B A23B is a proprietary model from Reflection. Access is API-only — there are no public weights to download.