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Reflection: Beam 1.0 501B A23B

reflection/beam-1.0-501b-a23b

Reflection: Beam 1.0 501B A23B is a 1,048,576-token model served on Composite at $0.313 per million tokens in and $1.25 per million tokens out.

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Specifications

Specifications and pricing as served by Composite
Model IDreflection/beam-1.0-501b-a23b
Providercv11
Context window1,048,576 tokens
Acceptstext
Returnstext
Input price$0.313 per million tokens
Output price$1.25 per million tokens
Prompt cachingSupported — cached input is billed at the provider's cache rate, on credits and plans alike
ThinkingAlways on for this model
ModeratedNo
Cost on a monthly planAbout 3.0 plan credits per typical call (8k in, 1k out)
Routing endpoints10 (base plus 9 routing variants)

Use Reflection: Beam 1.0 501B A23B in JanitorAI or SillyTavern

Make a Composite API key and type reflection/beam-1.0-501b-a23b as the model name. JanitorAI takes the full URL https://composite.lucidity.sh/v1/chat/completions; SillyTavern, ChubAI, Agnai and RisuAI take https://composite.lucidity.sh/v1. It runs on credits, a plan, or your own provider key.

JanitorAI setup · SillyTavern setup · Best Janitor AI proxies compared

Measured on Composite

This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.

Routing variants

The same model behind 9 alternative endpoints. Call the id directly to pin a route; the base id above picks for you.

RouteModel IDProviderPrice
Normal reflection/beam-1.0-501b-a23b-normal cv11 $0.375 per million tokens input · $1.25 per million tokens output
Normal + cheapThink reflection/beam-1.0-501b-a23b-normal:cheapThink cv11 $0.375 per million tokens input · $1.25 per million tokens output
Cheapest provider reflection/beam-1.0-501b-a23b:cheapest-provider Nebius $0.313 per million tokens input · $1.25 per million tokens output
Cheapest provider + cheapThink reflection/beam-1.0-501b-a23b:cheapest-provider:cheapThink Nebius $0.313 per million tokens input · $1.25 per million tokens output
cheapThink reflection/beam-1.0-501b-a23b:cheapThink cv11 $0.313 per million tokens input · $1.25 per million tokens output
Fast reflection/beam-1.0-501b-a23b:fast Nebius $0.313 per million tokens input · $1.25 per million tokens output
Fast + cheapThink reflection/beam-1.0-501b-a23b:fast:cheapThink Nebius $0.313 per million tokens input · $1.25 per million tokens output
Quality reflection/beam-1.0-501b-a23b:quality CoreWeave $0.375 per million tokens input · $1.25 per million tokens output
Quality + cheapThink reflection/beam-1.0-501b-a23b:quality:cheapThink CoreWeave $0.375 per million tokens input · $1.25 per million tokens output

Pricing

$0.313 per million tokens input · $1.25 per million tokens output

Credits pay the provider’s price plus 25%; cache hits cost less.

On a monthly plan, a typical call (8k tokens in, 1k out) uses about 3.0 plan credits, at the provider's own price.

Provider

cv11

Roleplay fit

This model is available on Composite alongside dozens of others from other labs, so it is easy to compare against similar options.

Context behavior

With a 1,048,576-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.

Cost for regular use

It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.

From the provider

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...

Supplied by cv11, not written by Composite.