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GLM-4.5 vs Reka Flash 3

A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.

Updated

GLM-4.5 specs · Reka Flash 3 specs
Verdict by category
  • PriceTie

    Neither model publishes per-token API pricing.

  • Context windowGLM-4.5

    GLM-4.5 accepts 128K tokens vs 32K, 4.0× the room for long documents and codebases.

  • BenchmarksTie

    No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.

  • ModalitiesGLM-4.5

    GLM-4.5 supports 2 modalities (text, vision) vs 1 for Reka Flash 3.

  • OpennessTie

    Both ship open weights, self-host either one.

On balance GLM-4.5 edges ahead, winning 2 of 5 categories against Reka Flash 3's 0. Neither model publishes per-token API pricing. GLM-4.5 accepts 128K tokens vs 32K, 4.0× the room for long documents and codebases.

No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, GLM-4.5 handles text, vision while Reka Flash 3 handles text, which can be the deciding factor before you even look at benchmarks. Both ship open weights, self-host either one.

GLM-4.5 is the newer of the two, released 5 months after Reka Flash 3, which usually means a more recent knowledge cutoff and updated safety post-training. GLM-4.5 is usually picked for chinese llm and open source llm workloads, while Reka Flash 3 sees more deployments in reasoning and open source llm. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.

Side-by-side specs

SpecGLM-4.5Reka Flash 3
ProviderOtherOther
ReleasedJul 2025Mar 2025
Modalitiestext, visiontext
Context window128K tokens32K tokens
Max output,,
Input · 1MPricing not publishedPricing not published
Output · 1MPricing not publishedPricing not published
Knowledge cutoff,,
Open weightsYes (MIT)Yes (Apache-2.0)
API availableYesYes

Pricing at scale

What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.

  • Light usage, 100k in / 50k out per day, vs ,
  • Heavy usage, 1M in / 500k out per day, vs ,
  • RAG workload, 5M in / 200k out per day, vs ,

Light usage, 100k in / 50k out per day: pricing not directly comparable (one or both models are missing public per-token rates). Heavy usage, 1M in / 500k out per day: pricing not directly comparable (one or both models are missing public per-token rates). RAG workload, 5M in / 200k out per day: pricing not directly comparable (one or both models are missing public per-token rates).

Price calculator

Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.

  • GLM-4.5Pricing unavailable
  • Reka Flash 3Pricing unavailable

Benchmarks compared

Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.

Benchmark scores not yet available. We only publish numbers we can source from official model cards or independent leaderboards, see methodology.
Pick GLM-4.5 if

GLM-4.5 fits when…

  • MIT license
  • Strong Chinese
  • Multimodal
  • Long-context tasks, handles 128K tokens vs 32K for Reka Flash 3.
  • Multimodal needs covering vision.
Pick Reka Flash 3 if

Reka Flash 3 fits when…

  • Apache-2.0 reasoning model
  • Extended thinking support
Don't want either?

Consider DBRX

Databricks' 132B MoE, a notable 2024 open-weight release tuned for enterprise.

See DBRX specsGLM-4.5 vs DBRXReka Flash 3 vs DBRX

Frequently asked

  • Is GLM-4.5 or Reka Flash 3 cheaper?
    Per-token pricing isn't published for at least one of these models, check each model's spec page for current rates.
  • Which has the larger context window?
    GLM-4.5 accepts 128K tokens vs 32K for Reka Flash 3.
  • Is GLM-4.5 or Reka Flash 3 better for coding?
    Both GLM-4.5 and Reka Flash 3 are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.
  • Are either of these models open source?
    Both ship with open weights. GLM-4.5 is licensed under MIT; Reka Flash 3 under Apache-2.0.
  • When were GLM-4.5 and Reka Flash 3 released?
    GLM-4.5 was released by Other on 2025-07-28. Reka Flash 3 was released by Other on 2025-03-15.
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