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Head-to-head comparison

GLM 5.3 Flash vs GLM 5V Turbo

GLM 5.3 Flash (Z.ai) and GLM 5V Turbo (Z.ai) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 24 October 2026

As of 24 October 2026, GLM 5.3 Flash holds the stronger ModelCap Index position (#24 vs #59); GLM 5.3 Flash is 8× cheaper per output token ($0.50/1M vs $4.00/1M); GLM 5.3 Flash offers the longer context window (1M vs 203K tokens); and GLM 5.3 Flash ships open weights.

Which should you choose?

Choose GLM 5.3 Flash if…

  • you want the stronger overall ModelCap Index position — #24 against #59 (77.3 vs 64.2 points).
  • API cost matters — $0.50/1M output tokens against $4.00/1M, about 8× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.15/1M against $1.20/1M.
  • you need the longer context window — 1M tokens against 203K.
  • you want to self-host: GLM 5.3 Flash ships open weights while GLM 5V Turbo is no linked weights.
  • you want provider choice — 34 listed API providers against 1.
  • Arena text is your yardstick — 1476 against 1434.
  • Arena coding is your yardstick — 1525 against 1488.
  • you want the more recently listed model — GLM 5.3 Flash was listed 26 August 2026, GLM 5V Turbo 1 April 2026.

Choose GLM 5V Turbo if…

  • ModelCap publishes no field on which GLM 5V Turbo leads GLM 5.3 Flash for this pair.

GLM 5.3 Flash vs GLM 5V Turbo: specs, pricing and context

Specification comparison of GLM 5.3 Flash and GLM 5V Turbo
FieldGLM 5.3 FlashZ.aiGLM 5V TurboZ.ai
ModelCap Index position#24#59
Index score77.364.2
EvidenceMeasuredMeasured
Input price / 1M tokens$0.15$1.20
Output price / 1M tokens$0.50$4.00
Context window1M tokens203K tokens
Declared route output cap944K131K
API providers listed341
Weight accessOpen weightsNo linked weights
Input modalitiesText, Image, VideoImage, Text, Video
First listed26 August 20261 April 2026
PublisherZ.aiZ.ai

Evidence: 4 public benchmark observations across 4 boards · 2 public benchmark observations across 2 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: GLM 5.3 Flash vs GLM 5V Turbo

Public benchmark boards where GLM 5.3 Flash or GLM 5V Turbo has a published result
BoardGLM 5.3 FlashGLM 5V TurboLeads
Arena textArena (LMArena)14761471–1481Not reported14341427–1440Not reportedGLM 5.3 Flash
Arena codingArena (LMArena)15251518–153214881477–1499GLM 5.3 Flash
LMArena AgentLMArena-1.8%-2.4%–-1.1%—Only one result
ARC-AGI-2ARC Prize Foundation65.8%Max—Only one result
AA Intelligence IndexArtificial Analysis41.8Reasoning—Only one result
AA Terminal-Bench 2.1Artificial Analysis84.3%Reasoning—Only one result
AA Humanity's Last ExamArtificial Analysis39.9%Reasoning—Only one result
Terminal-Bench 4.0Terminal-Bench (Laude Institute)35.8%32.2%–39.3%Claude Code · None—Only one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

GLM 5.3 Flash vs GLM 5V Turbo: common questions

Is GLM 5.3 Flash better than GLM 5V Turbo?

GLM 5.3 Flash ranks higher on the ModelCap Index as of 24 October 2026: #24 against #59. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals do not overlap, but the aggregate Index does not predict performance on every task; compare the relevant benchmark configurations before choosing.

Is GLM 5.3 Flash cheaper than GLM 5V Turbo?

GLM 5.3 Flash is cheaper on output tokens: $0.50/1M against $4.00/1M. Input tokens are $0.15/1M for GLM 5.3 Flash and $1.20/1M for GLM 5V Turbo. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $0.55 for GLM 5.3 Flash versus $4.40 for GLM 5V Turbo. GLM 5.3 Flash costs 87.5% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.

Which has the bigger context window, GLM 5.3 Flash or GLM 5V Turbo?

GLM 5.3 Flash has the larger context window: 1M tokens against 203K. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified.

Which is better for coding, GLM 5.3 Flash or GLM 5V Turbo?

Arena coding: GLM 5.3 Flash 1525, GLM 5V Turbo 1488 — GLM 5.3 Flash leads.

Are GLM 5.3 Flash and GLM 5V Turbo open-weight models?

GLM 5.3 Flash: Open weights. GLM 5V Turbo: No linked weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence. A missing weight link does not identify every API or chat product that offers a model.

Where can I run GLM 5.3 Flash and GLM 5V Turbo?

ModelCap currently lists 34 API providers for GLM 5.3 Flash and 1 for GLM 5V Turbo, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this GLM 5.3 Flash vs GLM 5V Turbo comparison?

Every figure and ModelCap Index position comes from the same published snapshot dated 24 October 2026. Publication and page updates happen separately; use the snapshot date shown on the page.

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