Beam 1.0 501B A23B
by ReflectionChat
Sparse mixture-of-experts reasoning model with 23B active parameters for coding and agentic workflows
- Context
- 1.05M tokens
- Max output
- 131,072 tokens
- Parameters
- 501B total
- Released
- 2026-10-05
- Weights
- Open
- Licence
- apache-2.0
reflection/beam-1-0-501b-a23b · also seen as reflection-ai/beam-1.0-501b-a23b, beam-free, reflection/beam, reflection/beam-1.0-501b-a23b-20261016
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-10-05
- Weights
- Opennot gated
- License
- apache-2.0
- Input
- Text
- Output
- Text
- Context window
- 1,048,576 max across endpoints
- Max output
- 131,072
- Providers
- 6 + 5 gateways, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.25–$1.30 in · $1.00–$4.30 out per 1M tokens · 5 of 6 providers have a comparable price
More details
- Last updated
- 2026-10-16
- Knowledge cutoff
- 2026-06-30
- Weights link
- Hugging Face · reflection/Beam-1.0-501B-A23B
- Parameters
- 501B total
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt caching
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperature
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
Atom feedNo change since 19 Oct 2026. The cheapest direct price has been $0.25 in / $1.00 out per 1M tokens at Nebius Token Factory on every data refresh since then.
Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs Beam 1.0 501B A23B |
|---|---|---|---|---|---|
| Mercury Coder Small BetaInception | $0.375 | $0.25 | $1.00 | 32.8K | +0% |
| GPT-5.4 nanoOpenAI | $0.375 | $0.20 | $1.25 | 400K | +0% |
| Perceptron Mk1perceptron | $0.375 | $0.15 | $1.50 | 32.8K | +0% |
| Perceptron Mk1.5perceptron | $0.375 | $0.15 | $1.50 | 36.9K | +0% |
| Toast 1Mixedbread | $0.37 | $0.30 | $0.72 | 131K | −1% cheaper |
| DeepSeek V3.1DeepSeek | $0.367 | $0.25 | $0.95 | 164K | −2% cheaper |
| MAI-Code-1.1-FlashMicrosoft | $0.367 | $0.20 | $1.20 | 256K | −2% cheaper |
| MiniMax-M2.5MiniMax | $0.383 | $0.27 | $0.95 | 205K | +2% |
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