ReflectionOpen weights: reflection/Beam-1.0-501B-A23BReasoning modelNewFirst measured 17 Oct 2026Compare with another modelBeam 1.0 501B A23B
Beam 1.0 501B A23B is a Reflection open-weights reasoning model, released 5 Oct 2026. It is not yet ranked: 2 independent results so far, and the index needs at least five across two categories. At $0.600 per million tokens blended it is mid-priced. Output speed of 128 tokens per second puts it faster than most, with a first token in 0.4 s. Last measured 19 Oct 2026.
- Blended price
- $0.600/M
- $0.400 in · $1.20 out
- Output speed
- 128 tok/s
- OpenRouter traffic, 7-day median; not yet measured by Artificial Analysis
- First answer
- 0.36 s
- Context
- 1.0M
- Full answer
- –
- Cost per run
- –
- Released
- 5 Oct 2026
- Coding47
- Agents & tools40
Benchmark results
See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Coding
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena WebDev | 1437#75 | Arena (LMArena) |
Agents & tools
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Agent | -4.6#39 | Arena (LMArena) |
Where to run it
Every provider serving this model through OpenRouter, with throughput and first-token latency measured on live traffic over the last 30 minutes and each provider’s own price. Purple marks the best in each column.
| Provider | Speed | First token | Input $/M | Output $/M | Context | Quantisation |
|---|---|---|---|---|---|---|
| Together | 260 tok/s | 0.27 s | $0.400 | $1.20 | 1.0M | – |
| CoreWeave | 238 tok/s | 0.73 s | $0.300 | $1.00 | 1.0M | fp4 |
| Nebius Token Factory | 189 tok/s | 0.61 s | $0.250 | $1.00 | 1.0M | fp8 |
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache at $0.040 per 1M. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.0005 | $0.0004 | 2.7 s |
| Summarize a 30-page report | 12,000 / 600 | $0.0055 | $0.0023 | 5.0 s |
| Code edit | 6,000 / 1,500 | $0.0042 | $0.0026 | 12.1 s |
| Agentic coding session | 60,000 / 4,000 | $0.029 | $0.013 | 31.6 s |
| Structured extraction | 2,000 / 200 | $0.0010 | $0.0005 | 1.9 s |
More from Reflection
See also
Data as of 21 Oct 2026. Compare with another model.
Cite as: BenchLeader, “Beam 1.0 501B A23B: benchmarks, pricing, speed and rank”, https://www.benchleader.com/models/beam-1-0-501b-a23b, data as of 21 Oct 2026.