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Specifications
Specifications and pricing as served by Composite
Model ID
reflection/beam-1.0-501b-a23b
Provider
cv11
Context window
1,048,576 tokens
Accepts
text
Returns
text
Input price
$0.313 per million tokens
Output price
$1.25 per million tokens
Prompt caching
Supported — cached input is billed at the provider's cache rate, on credits and plans alike
Thinking
Always on for this model
Moderated
No
Cost on a monthly plan
About 3.0 plan credits per typical call (8k in, 1k out)
Routing endpoints
10 (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.
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.
Route
Model ID
Provider
Price
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
$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...