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Head-to-head comparison

GLM 5.3 vs GLM 5 Turbo

GLM 5.3 (Z.ai) and GLM 5 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 19 August 2026

As of 19 August 2026, GLM 5.3 holds the stronger ModelCap Index position (#7 vs #39); GLM 5 Turbo is cheaper per output token ($4.00/1M vs $4.40/1M); and GLM 5.3 offers the longer context window (1M vs 203K tokens).

Which should you choose?

Choose GLM 5.3 if…

  • you want the stronger overall ModelCap Index position — #7 against #39 (78.4 vs 53.9 points).
  • you need the longer context window — 1M tokens against 203K.
  • Artificial Analysis Intelligence Index is your yardstick — 59.5 against 39.1.
  • you want the more recently listed model — GLM 5.3 was listed 18 August 2026, GLM 5 Turbo 15 March 2026.

Choose GLM 5 Turbo if…

  • API cost matters — $4.00/1M output tokens against $4.40/1M.
  • your workload is prompt-heavy — input tokens cost $1.20/1M against $1.40/1M.

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

Specification comparison of GLM 5.3 and GLM 5 Turbo
FieldGLM 5.3Z.aiGLM 5 TurboZ.ai
ModelCap Index position#7#39
Index score78.453.9
EvidenceMeasuredMeasured
Input price / 1M tokens$1.40$1.20
Output price / 1M tokens$4.40$4.00
Context window1M tokens203K tokens
Max output tokens131K131K
API providers listed11
Weight accessAPI onlyAPI only
Input modalitiesTextText
First listed18 August 202615 March 2026
PublisherZ.aiZ.ai

Evidence: 1 public benchmark observation across 1 board · 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 vs GLM 5 Turbo

Public benchmark boards where GLM 5.3 or GLM 5 Turbo has a published result
BoardGLM 5.3GLM 5 TurboLeads
Artificial Analysis Intelligence IndexArtificial Analysis59.5intelligence-index39.1intelligence-indexGLM 5.3
WildClawBench OpenClawWildClawBench—33.9Only 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 vs GLM 5 Turbo: common questions

Is GLM 5.3 better than GLM 5 Turbo?

GLM 5.3 ranks higher on the ModelCap Index as of 19 August 2026: #7 against #39. 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.

Is GLM 5.3 cheaper than GLM 5 Turbo?

GLM 5 Turbo is cheaper on output tokens: $4.00/1M against $4.40/1M. Input tokens are $1.40/1M for GLM 5.3 and $1.20/1M for GLM 5 Turbo. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

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

GLM 5.3 has the larger context window: 1M tokens against 203K.

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

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

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

GLM 5.3: API only. GLM 5 Turbo: API only. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run GLM 5.3 and GLM 5 Turbo?

ModelCap currently lists 1 API provider for GLM 5.3 and 1 for GLM 5 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 vs GLM 5 Turbo comparison?

Every figure comes from the sealed ModelCap dataset published 19 August 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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