Reflection: Beam 1.0 501B A23B✓ Catalog verified
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...
Overview
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...
Access: available through the official Reflection API. Context window: 1.0M.
Specifications
| API identifier | reflection/beam-1.0-501b-a23b |
| Provider | Reflection |
| Model type | Text LLM |
| Context window | 1.0M catalog |
| Input modalities | text |
| Output modalities | text |
| Released | Oct 16, 2026 |
| Moderated | No |
| Architecture modality | text->text |
Pricing
Live pricing components for reflection/beam-1.0-501b-a23b as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $0.000001 | $1.00 / 1M | Per input token |
| Completion tokens | $0.000003 | $3.00 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | N/A | N/A | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$1.1Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | Not advertised | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call Reflection: Beam 1.0 501B A23B through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="reflection/beam-1.0-501b-a23b",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| DeepSeek: DeepSeek V4 Flash 0423 | DeepSeek | 1.0M | $0.09 | View → |
| DeepSeek: DeepSeek V4 Flash 0731 | DeepSeek | 1.0M | $0.07 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does Reflection: Beam 1.0 501B A23B cost?
$1.00 per 1M input tokens and $3.00 per 1M output tokens on the official Reflection API.
What is the context window of Reflection: Beam 1.0 501B A23B?
Reflection: Beam 1.0 501B A23B supports up to 1.0M tokens of context.
Does Reflection: Beam 1.0 501B A23B support tool / function calling?
Yes, Reflection: Beam 1.0 501B A23B supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access Reflection: Beam 1.0 501B A23B?
Use the official Reflection API with the model id `reflection/beam-1.0-501b-a23b`. See the Quick start section above for code examples.