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Head-to-head comparison

GPT-4 Turbo vs GLM 4.6V Flash

GPT-4 Turbo (OpenAI) and GLM 4.6V Flash (Zai Org) 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 18 August 2026

As of 18 August 2026, GLM 4.6V Flash holds the stronger ModelCap Index position (#172 vs #174); GLM 4.6V Flash offers the longer context window (131K vs 128K tokens); and GLM 4.6V Flash ships open weights.

Which should you choose?

Choose GPT-4 Turbo if…

  • you want provider choice — 1 listed API providers against 0.

Choose GLM 4.6V Flash if…

  • you want the stronger overall ModelCap Index position — #172 against #174 (21.4 vs 20.9 points).
  • you need the longer context window — 131K tokens against 128K.
  • you want to self-host: GLM 4.6V Flash ships open weights while GPT-4 Turbo is api only.
  • you want the more recently listed model — GLM 4.6V Flash was listed 7 December 2025, GPT-4 Turbo 9 April 2024.

GPT-4 Turbo vs GLM 4.6V Flash: specs, pricing and context

Specification comparison of GPT-4 Turbo and GLM 4.6V Flash
FieldGPT-4 TurboOpenAIGLM 4.6V FlashZai Org
ModelCap Index position#174#172
Index score20.921.4
EvidenceMeasuredEstimated
Input price / 1M tokens$10.00Unlisted
Output price / 1M tokens$30.00Unlisted
Context window128K tokens131K tokens
Max output tokens4K—
API providers listed10
Weight accessAPI onlyOpen weights
Input modalitiesText, ImageText, Image
First listed9 April 20247 December 2025
PublisherOpenAIZai Org

Evidence: 3 public benchmark observations across 3 boards · global corpus prior · leave-one-anchor-out calibrated. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: GPT-4 Turbo vs GLM 4.6V Flash

Public benchmark boards where GPT-4 Turbo or GLM 4.6V Flash has a published result
BoardGPT-4 TurboGLM 4.6V FlashLeads
Arena codingArena (LMArena)13471340–1354—Only one result
Artificial Analysis Intelligence IndexArtificial Analysis7.7intelligence-index—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.

GPT-4 Turbo vs GLM 4.6V Flash: common questions

Is GPT-4 Turbo better than GLM 4.6V Flash?

GLM 4.6V Flash ranks higher on the ModelCap Index as of 18 August 2026: #172 against #174. 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 GPT-4 Turbo cheaper than GLM 4.6V Flash?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, GPT-4 Turbo or GLM 4.6V Flash?

GLM 4.6V Flash has the larger context window: 131K tokens against 128K.

Which is better for coding, GPT-4 Turbo or GLM 4.6V Flash?

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 GPT-4 Turbo and GLM 4.6V Flash open-weight models?

GPT-4 Turbo: API only. GLM 4.6V Flash: Open weights. 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 GPT-4 Turbo and GLM 4.6V Flash?

ModelCap currently lists 1 API provider for GPT-4 Turbo and 0 for GLM 4.6V Flash, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this GPT-4 Turbo vs GLM 4.6V Flash comparison?

Every figure comes from the sealed ModelCap dataset published 18 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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