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Beam 1.0 501B-A23B

Reflection AIOpen weightsReasoningProvisionalReleased Oct 16, 2026Input: text
Compare with Grok 4Source scores ↗OpenRouter ↗
Overall score
51.6
Rank 94 of 222 · 37.2–65.9
Context window
1M
1,000,000 tokens
Price per 1M tokens
$0.30 in · $1.00 out
Source: OpenRouter
Blended price
$0.47
3:1 input:output tokens
Output speed
—
Not measured yet

Category scores

Scores per capability area with the model's rank among ranked models in that category.

  1. 1Reasoning78.7
  2. 2Knowledge56.6
Higher is better. #N is the model's rank in that category, where it is eligible to be ranked.

Benchmark results (16)

As reported in system cards, papers and public evaluations. Position compares this model with every other model reporting the same benchmark.

Agentic & tool use

Terminal-Bench 2.180.1#30 of 68
BrowseComp76.8#27 of 50
MCP Atlas80.8#10 of 42
HLE w/ tools51.1#20 of 27
τ³-bench results36.1#17 of 23
DeepSearchQA80.5#11 of 20

Coding

SWE-bench Verified81.6#11 of 98
SWE-bench Pro66.1#10 of 69
DeepSWE43.3#47 of 50
SciCode49.2#6 of 23
SWE-Atlas Codebase QnA31.8#4 of 4

Multilingual

SWE Multilingual78.3#15 of 46

Reasoning

LongBench v267.5#1 of 17

Knowledge

HLE w/o tools36.0#25 of 43

Instruction following

IFBench79.6#11 of 42

Math

AIME2697.7#2 of 29

Pricing by source

USD per 1M tokens.

SourceInputOutputCached in
List price (OpenRouter)$0.30$1.00—
OpenRouter reflection/beam-1.0-501b-a23b$0.30$1.00$0.040

Reflection publishes downloadable Apache 2.0 weights and, per the October 16, 2026 launch post, serves Beam-1.0-501B-A23B through its API in public beta, free to start. No per-token tariff is published; the account-gated platform pricing page shows none. Hardware costs for self-hosting are separate. The model id and request limits are documented on the developer Models page.

Price history

  • Oct 17, 2026: $1.00 / $3.00
  • Oct 19, 2026: $0.30 / $1.00

Arena ratings

Human-preference ratings from LMArena. Best-rated variant shown.

WebDev (coding)1437#81 · 2.9K votes

Open weights

From the Hugging Face repository.

Parameters
501B
Licence
apache-2.0
Downloads (30 days)
2.9K

Speed

Measured by us through OpenRouter (median of trials).

Not measured yet.

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