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Beam 1.0

Reflection AI · Released 7 Oct 2026 · Open weights

In short

Reflection AI's open model for coding agents: among the fastest models here, with a strong LiveBench coding score, Apache 2.0.

Key facts

Maker
Reflection AI
Released
7 Oct 2026
Open weights
Yes, you can download it and run it yourself
License
Apache 2.0: free for almost any use
Size
501B total, 23B active parametersB = billion, T = trillion. Bigger usually needs a stronger computer.
Official page
Official page for Beam 1.0 (huggingface.co)

Scores

"Independent" = run by an outside group. "Maker's own number" = the company's own claim.

Every test, ranked
  • All-roundArtificial Analysis Intelligence Index

    30 index points #14 of 17 models scored independent

    One combined score from many independent tests of how smart a model is.

    as of 18 Oct 2026 · source

  • Build websites & appsLMArena WebDev

    1438 Arena score #15 of 18 models scored independent

    When people ask two AIs to build the same website or app and compare the results, which one do they pick?

    setting: 501b-a23b · as of 17 Oct 2026 · source

  • CodingLiveBench 2.0 Coding

    83.9 score out of 100 #10 of 15 models scored independent

    Fresh coding tasks with tests that check the answer, changed often so models cannot memorize them.

    setting: highest supported effort · as of 14 Oct 2026 · source

  • ReasoningLiveBench 2.0 Reasoning

    80.2 score out of 100 #11 of 15 models scored independent

    Fresh logic and puzzle questions with one right answer, changed often so models cannot memorize them.

    setting: highest supported effort · as of 14 Oct 2026 · source

  • SpeedOutput speed

    228 tokens per second #3 of 16 models scored independent

    How many tokens (pieces of words) per second the model writes once it starts answering. Higher is faster.

    as of 18 Oct 2026 · source

How it compares

The 3 models closest to Beam 1.0 on the Artificial Analysis Intelligence Index, an all-round score. Beam 1.0: 30 index points, #14 of 17 models scored.

News about Beam 1.0 on ITG Now

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FAQ

Is Beam 1.0 free and open?

Beam 1.0 has open weights: you can download it and run it on your own computer or server. License: Apache 2.0: free for almost any use.

How much does Beam 1.0 cost?

There is no listed price per token. It has open weights, so you can run it yourself or through a host you pick.

What is Beam 1.0 best at?

Reflection AI's open model for coding agents: among the fastest models here, with a strong LiveBench coding score, Apache 2.0. Its best result: #3 of 16 models scored on Output speed (speed).

Who makes Beam 1.0?

Beam 1.0 is made by Reflection AI. It came out on 7 Oct 2026.