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Beam 1.0 501B A23B

by Reflection
reflection/beam-1.0-501b-a23b

Beam 1.0 501B A23B is a text-input model by Reflection, available through the AgentSky API as reflection/beam-1.0-501b-a23b at $0.4642 per million input tokens and $1.3926 per million output tokens, with a 1M context window.

Beam 1.0 is Reflection's open-weight reasoning model for coding and long-horizon agentic workflows.

Repo

Pricing

USD per million tokens, using your plan when signed in.
MeterPer 1M tokens
InputPrice: $0.4642
OutputPrice: $1.3926
Cache readPrice: $0.058025
Cache writePrice: $0.4642

Every response carries its own cost. Balance and per-call records: /v1/credits and /v1/generation.

Use it

Point your client at the gateway and pass this model id. Nothing else changes.
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://gateway.agentsky.dev/v1",
  apiKey: process.env.AGENTSKY_API_KEY, // ast_…
});

const completion = await client.chat.completions.create({
  model: "reflection/beam-1.0-501b-a23b",
  messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(completion.usage.cost); // USD, in the response

Questions