reflection
Reflection: 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...
Quality Score
98/100
price + capability + benchmarks
Input Price
$1.00
per 1M tokens · checked 2026-10-19
Output Price
$3.00
per 1M tokens · checked 2026-10-19
Context Window
1,048,576
tokens
- Model ID
- reflection/beam-1.0-501b-a23b
- Vendor
- reflection
- Released
- October 2026
- Tokenizer
- Other
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 943,718 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $1.00/M input and $3.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.03 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.65 |
| A month of a busy support chatbot | 5M in / 2M out | $11.00 |
Quick answers
- How much does Reflection: Beam 1.0 501B A23B cost?
- $1.00 per million input tokens and $3.00 per million output tokens.
- What is Reflection: Beam 1.0 501B A23B's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Reflection: Beam 1.0 501B A23B support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Reflection: Beam 1.0 501B A23B process images?
- No, it is text-only on the input side.