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Model Comparison

Beam 1.0 501B A23B vs Reka Flash 3Which Is Better in 2026?

Reflection•
Reka AI

Beam 1.0 501B A23B vs Reka Flash 3: which should you choose in 2026?

Beam 1.0 501B A23B (by Reflection) and Reka Flash 3 (by Reka AI) are compared below. Here is how they stack up on benchmarks, price, and capabilities, and which one to pick in 2026.

There are not enough shared, protocol-compatible benchmark results to declare a performance leader.

Reka Flash 3 is about 3.5× cheaper on a blended 3:1 input/output basis ($0.125 vs $0.4375 per 1M tokens).

Beam 1.0 501B A23B has the larger context window (1,048,576 tokens vs 65,536 tokens).

Choose Beam 1.0 501B A23B if…

  • • you work with longer documents, transcripts, or codebases

Choose Reka Flash 3 if…

  • • lower blended API cost matters for your workload

The benchmark count includes only results measured with a matching benchmark version and protocol. Arena scores are shown separately. Missing, preliminary, and incompatible data is not treated as a controlled win. Published point-score comparisons are labeled separately when protocol details are incomplete. For text-output models, the verdict also compares token pricing and context windows.

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Performance benchmarks

Every value links to its source. A dash means that no reviewed result is available for that exact model and protocol.

Beam 1.0 501B A23B and Reka Flash 3 benchmark results
BenchmarkBeam 1.0 501B A23BReka Flash 3
AutomationBench-AA

A 657-task benchmark of multi-step work across simulated SaaS applications in six business domains. The Artificial Analysis protocol reports a guardrail-aware score and is distinct from both the public Zapier split and the unrelated dynamic AutoBench framework.

Guardrail-aware score

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BrowseComp

A benchmark of difficult, verifiable information-seeking questions designed to measure an agent's ability to locate hard-to-find facts through web browsing.

Accuracy

——
OSWorld-Verified

A verified computer-use benchmark in which multimodal agents operate desktop applications and are graded from the resulting environment state.

Mean task reward

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SWE-Bench Verified

A human-validated subset of real GitHub issues used to measure whether a coding agent can produce repository patches that resolve the associated tests.

Resolved

——
Terminal-Bench 2.1

Version 2.1 of the benchmark for completing realistic tasks in terminal environments. Harness, resource limits, and attempt count are part of the protocol.

Mean task success

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AutoBench

A dynamic LLM evaluation framework in which models generate questions, answer them, and participate in reciprocal peer assessment. AutoBench is distinct from Zapier's AutomationBench.

Weighted peer-assessment score

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GPQA Diamond

The highest-quality subset of Graduate-Level Google-Proof Q&A, designed to test expert-level scientific reasoning in biology, physics, and chemistry.

Accuracy

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Humanity's Last Exam

A 2,500-question expert-level benchmark spanning dozens of academic fields. Tool-assisted and no-tools results are separate protocols and must not be merged.

Accuracy

——

Benchmark sources

    Reviewed evidence last updated 2026-08-09.

    Pricing, capabilities, and model facts

    Beam 1.0 501B A23B and Reka Flash 3 model facts
    FeatureBeam 1.0 501B A23BReka Flash 3
    Context & model facts
    DeveloperReflectionReka AI
    API providerReflectionReka Flash 3
    Input context1,048,576 tokens65,536 tokens
    Maximum output131,072 tokens58,982 tokens
    Released——
    Added to WritingmateOct 16, 2026Mar 12, 2025
    LicenseNot availableNot available
    Knowledge cutoff2026-06-302025-01-31
    Capabilities
    InputsTextText
    OutputsTextText
    Provider endpoint accepts tool parametersYesNo
    ReasoningYesYes
    VisionNoNo
    Image GenerationNoNo
    Video GenerationNoNo
    API pricing
    Input (per 1M tokens)$0.25$0.10
    Output (per 1M tokens)$1.00$0.20
    Blended 3:1 input/output$0.4375$0.125
    API performance
    p95 latencyNot measuredNot measured
    Output throughputNot measuredNot measured
    Writingmate shows API performance only when both models have enough observations from the same measurement window, prompt profile, and provider. Third-party latency values are not copied into this table.

    Data sources

    • Writingmate model catalog (pricing, limits, and availability)

    Catalog data last updated Oct 16, 2026.

    Why Pay for Multiple Subscriptions?

    Comparing Beam 1.0 501B A23B from Reflection with Reka Flash 3 from Reka AI? Instead of managing separate API keys and subscriptions, get both with Writingmate.

    Subscription-plan access for Beam 1.0 501B A23B and Reka Flash 3
    PlanPriceBeam 1.0 501B A23BReka Flash 3AI ImagesAI Video
    Writingmate Pro
    Most popular
    		$20/moIncludedIncludedNano Banana Pro, FLUX.2, DALL-E & moreVEO 3.1, Kling 3.0
    Writingmate Ultimate
    Power users
    		$60/moIncludedIncludedNano Banana Pro, FLUX.2, DALL-E & moreVEO 3.1, Kling 3.0
    View Plans & Pricing

    Beam 1.0 501B A23B vs Reka Flash 3 FAQ

    Which is better, Beam 1.0 501B A23B or Reka Flash 3?

    There are not enough shared, protocol-compatible benchmark results to declare a performance leader. Reka Flash 3 is about 3.5× cheaper on a blended 3:1 input/output basis ($0.125 vs $0.4375 per 1M tokens). Beam 1.0 501B A23B has the larger context window (1,048,576 tokens vs 65,536 tokens).

    Which model is cheaper to use through an API?

    Reka Flash 3 is about 3.5× cheaper on a blended 3:1 input/output basis ($0.125 vs $0.4375 per 1M tokens).

    Which model supports more context?

    Beam 1.0 501B A23B has the larger context window (1,048,576 tokens vs 65,536 tokens).

    Can I switch between Beam 1.0 501B A23B and Reka Flash 3?

    Yes. Use the model selector on this page to open any current Writingmate model comparison. You can also run the same prompt with both models in Writingmate.