How much does Beam 1.0 501B A23B cost?

On the Respan gateway, Beam 1.0 501B A23B costs from $0.25 per 1M input tokens and $1.00 per 1M output tokens on Nebius, after gateway discounts. Averaged across its 4 providers, it costs $0.74 per 1M input tokens and $2.38 per 1M output tokens.

Which providers serve Beam 1.0 501B A23B on Respan?

Beam 1.0 501B A23B is available through 4 providers: Nebius, TogetherAI, OpenRouter, and Baseten.

What is Beam 1.0 501B A23B's context window?

Beam 1.0 501B A23B accepts up to 1M tokens of context on its largest provider route.

How do I use Beam 1.0 501B A23B with the Respan gateway?

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "beam-1.0-501b-a23b". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Beam 1.0 501B A23B

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...

Input / output, from: $0.25 / $1.00 per 1M
Context: 1M tokens
Released: Oct 16, 2026

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Agent setup

Paste into Claude Code, Cursor, or Codex

Help me set up the Respan gateway: fetch and follow https://www.respan.ai/docs/agent-setup.md. Use model "beam-1.0-501b-a23b".

from openai import OpenAI

client = OpenAI(

    base_url="https://api.respan.ai/api/",

    api_key="YOUR_RESPAN_API_KEY",

)

response = client.chat.completions.create(

    model="beam-1.0-501b-a23b",

    messages=[{"role": "user", "content": "Hello!"}],

)

print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({

  baseURL: "https://api.respan.ai/api/",

  apiKey: "YOUR_RESPAN_API_KEY",

});

const response = await client.chat.completions.create({

  model: "beam-1.0-501b-a23b",

  messages: [{ role: "user", content: "Hello!" }],

});

console.log(response.choices[0].message.content);

curl https://api.respan.ai/api/chat/completions \

  -H "Authorization: Bearer YOUR_RESPAN_API_KEY" \

  -H "Content-Type: application/json" \

  -d '{

    "model": "beam-1.0-501b-a23b",

    "messages": [{"role": "user", "content": "Hello!"}]

}'

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Providers

4 providers, cheapest first, priced per 1M tokens after gateway discounts.

Provider	Context	Input	Output	Cache read	Capabilities
Nebius`nebius/reflection/beam`	1M	$0.25/M	$1.00/M	$0.00/M	+2
TogetherAI`together_ai/reflection/Beam-1.0-501B-A23B`	1M	$0.40/M	$1.20/M	$0.04/M
OpenRouter`openrouter/reflection/beam-1.0-501b-a23b`	1M	$1.00/M	$3.00/M	$0.10/M	+2
Baseten`baseten/reflection/Beam-1.0`	1M	$1.30/M	$4.30/M	$0.13/M	+2