ZMIME
Comparison · 2 models · Updated Oct 4, 2026

GPT-4.1 mini vs GLM-4.5V

GPT-4.1 mini comes out ahead, 62 to 49 on our weighted score, and it is the cheaper option too.

  1. Our pick

    OpenAI

    GPT-4.1 mini

    Released Apr 14, 2025

    62/100
    • ECI135.0
    • Price$0.40 / $1.60
    • Context1.05M
    Full specs Remove GPT-4.1 mini

  2. Z.ai (Zhipu)

    GLM-4.5V

    Released Aug 11, 2025

    49/100
    • ECI—
    • Price$0.60 / $1.80
    • Context64K
    Full specs Remove GLM-4.5V

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

GPT-4.1 mini is our pick

GPT-4.1 mini is the better all-round choice, scoring 62/100 against GLM-4.5V (49). It leads on price and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · GLM-4.5V $0.90 per 1M tokens (3:1 blend)
  • Longest contextGPT-4.1 miniGPT-4.1 mini 1,047,576 · GLM-4.5V 64,000 tokens
  • Widest inputsSame inputsGPT-4.1 mini: Text, Images, PDFs · GLM-4.5V: Text, Images, Video
  • Self-hostingGLM-4.5VPublishes downloadable weights
How the score is built
MeasureWeightGPT-4.1 miniGLM-4.5V
Price50%5752
Inputs & features30%7070
Context window20%6112
Overall100%62/10049/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

GPT-4.1 mini vs GLM-4.5V specifications side by side
SpecificationGPT-4.1 miniOpenAIGLM-4.5VZ.ai (Zhipu)
Capability
Capabilities Index (ECI)135.0—
ECI rank#115 of 148—
GPQA DiamondGraduate-level science questions65.9%—
FrontierMath Tiers 1–3Research-level mathematics6.7%—
OTIS Mock AIME 2024–2025Competition mathematics44.7%—
SimpleQA VerifiedShort factual questions12.7%—
Price per million tokens
Input$0.40 (best)$0.60
Output$1.60 (best)$1.80
Cached input$0.10—
Blended (3:1)$0.70 (best)$0.90
Long-context rateSame rateSame rate
Price sourceOfficial OpenAI APIOfficial Z.AI API
Limits
Context window1,047,576 tokens (best)64,000 tokens
Max output32,768 tokens (best)16,384 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoNo
VideoNoYes
ReasoningNoYes
Tool callingYesYes
Structured outputYesNo
Availability
WeightsProprietaryOpen
API model IDgpt-4.1-miniglm-4.5v
API providers24 (best)11
ReleasedApr 14, 2025Aug 11, 2025
Knowledge cutoffApr 2024Apr 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • GPT-4.1 mini$7.20
  • GLM-4.5V$9.60
04 — Questions

Which should you choose?

Which is better: GPT-4.1 mini or GLM-4.5V?

GPT-4.1 mini is the better all-round choice, scoring 62/100 against GLM-4.5V (49). It leads on price and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, GPT-4.1 mini or GLM-4.5V?

GPT-4.1 mini is cheaper at $0.40 input / $1.60 output per million tokens (official OpenAI API price). GLM-4.5V costs $0.60 input / $1.80 output per million tokens (official Z.AI API price). At a typical mix of three input tokens to one output token, that is $0.70 per million tokens for GPT-4.1 mini versus $0.90 for GLM-4.5V (1.3× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. GPT-4.1 mini has an ECI of 135.0 and GLM-4.5V has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for GPT-4.1 mini and GLM-4.5V yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

GPT-4.1 mini has the largest context window at 1,047,576 tokens, against 64,000 for GLM-4.5V. Maximum output per response: GPT-4.1 mini up to 32,768, GLM-4.5V up to 16,384 tokens.

Which can read images, PDFs, audio or video?

GPT-4.1 mini accepts text, images and PDFs; GLM-4.5V accepts text, images and video. They handle the same number of input types.

Are any of these open source?

GLM-4.5V publishes its weights and can be self-hosted; GPT-4.1 mini is proprietary.

Which is newer?

GLM-4.5V is the newest, released Aug 11, 2025. GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: GPT-4.1 mini Apr 2024, GLM-4.5V Apr 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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