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Model comparison

GLM-5 (Reasoning) vs GPT-5.4 mini

Updated July 31, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

GLM-5 (Reasoning)

Z.AI

59.0/100

Estimated · Public rank #59

90% interval 47.5–70.5

GPT-5.4 mini

OpenAI

55.8/100

Estimated · Public rank #82

90% interval 44.3–67.3

GLM-5 (Reasoning) has the higher public score estimate, 59 versus 55.84, but the 90% score intervals overlap. Treat that as a lead, not a settled winner.

1 results are shared. Category rows based on different benchmark sets are marked directional and do not name a winner.

Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Long documents

    Prompts that approach the documented context limit

    GPT-5.4 mini

    GPT-5.4 mini has the larger documented context window.

    Confidence: documented

  • Chat turn cost

    1K fresh input + 500 output tokens

    GLM-5 (Reasoning)

    GLM-5 (Reasoning) has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    GPT-5.4 mini

    GPT-5.4 mini has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    No shared weighted benchmark basis supports a winner.

    Confidence: limited

  • Agentic work

    Tool use, computer use, and multi-step task completion

    Not enough matched evidence

    No shared weighted benchmark basis supports a winner.

    Confidence: limited

  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    Not enough matched evidence

    The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. GLM-5 (Reasoning) does not fit this workload in one request. GLM-5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

Shared results
1
GLM-5 (Reasoning) only
0
GPT-5.4 mini only
13
Like-for-like categories
0 / 8

Category results, on a stated basis

Each row states whether both averages use the same weighted benchmark set. Directional and not-comparable rows remain visible, but they never receive a winner in this template.

Agentic

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
65.7
Weighted basis
0 vs 2 rows
Reading
Not comparable

Coding

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Reasoning

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Knowledge

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
47.8
Weighted basis
0 vs 2 rows
Reading
Not comparable

Math

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
21.7
Weighted basis
0 vs 2 rows
Reading
Not comparable

Multilingual

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Multimodal

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
76.6
Weighted basis
0 vs 1 rows
Reading
Not comparable

Instruction following

Not comparable
GLM-5 (Reasoning)
Not measured
GPT-5.4 mini
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

A shared-evidence shape is not available.

BenchLM does not draw a radar or infer missing axes when the matched evidence is too sparse.

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

GLM-5 (Reasoning)
$0.0026
Fits in one request
GPT-5.4 mini
$0.003
Fits in one request

GLM-5 (Reasoning) has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

GLM-5 (Reasoning)
$0.0596
Fits in one request
GPT-5.4 mini
$0.051
Fits in one request

GPT-5.4 mini has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

GLM-5 (Reasoning)
$0.252
Does not fit in one request
Cached input priced at the published list-input rate
GPT-5.4 mini
$0.075
Fits in one request

GLM-5 (Reasoning) does not fit this workload in one request. GLM-5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate.

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

GLM-5 (Reasoning)

Not published

GPT-5.4 mini

$0.075 per 1M cached input tokens

OpenAI pricing

Provider availability

GLM-5 (Reasoning)

Not sourced

GPT-5.4 mini

Generally Available · OpenAI Responses API

OpenAI model catalog

Reasoning profile

GLM-5 (Reasoning)

Reasoning

GPT-5.4 mini

Reasoning

Weight access

GLM-5 (Reasoning)

Open Weight

GPT-5.4 mini

Proprietary

License

GLM-5 (Reasoning)

Open Weight

GPT-5.4 mini

Proprietary

Release date

GLM-5 (Reasoning)

2026-03-01

GPT-5.4 mini

2026-03-17

If you already use one of these models
Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
GLM-5 (Reasoning) has the higher public score estimate, 59 versus 55.84, but the 90% score intervals overlap.
Workload cost
Repository review: $0.0596 vs $0.051. Cache-heavy agent loop: $0.252 vs $0.075.
Context tradeoff
GPT-5.4 mini has the larger documented window (400K).

Run the same representative tasks against both endpoints before changing production traffic.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence14 rows

Agentic

  • Terminal-Bench 2.0

    GLM-5 (Reasoning)
    GPT-5.4 mini60%
    Source

    Not directly comparable

  • OSWorld-Verified

    GLM-5 (Reasoning)
    GPT-5.4 mini72.1%
    Source

    Not directly comparable

  • MCP Atlas

    GLM-5 (Reasoning)
    GPT-5.4 mini57.7%
    Source

    Not directly comparable

  • Toolathlon

    GLM-5 (Reasoning)
    GPT-5.4 mini42.9%
    Source

    Not directly comparable

  • τ²-bench results

    GLM-5 (Reasoning)
    GPT-5.4 mini93.4%
    Source

    Not directly comparable

Coding

  • Vibe Code Bench

    Shared source
    GLM-5 (Reasoning)23.36%
    GPT-5.4 mini47.97%

    GPT-5.4 mini leads this result

  • FrontierCode 1.1 Main

    GLM-5 (Reasoning)
    GPT-5.4 mini27.0%
    Source

    Not directly comparable

Knowledge

  • GPQA

    GLM-5 (Reasoning)
    GPT-5.4 mini88%
    Source

    Not directly comparable

  • HLE

    GLM-5 (Reasoning)
    GPT-5.4 mini41.5%
    Source

    Not directly comparable

  • HLE w/o tools

    GLM-5 (Reasoning)
    GPT-5.4 mini28.2%
    Source

    Not directly comparable

Math

  • FrontierMath v2 (Tiers 1-3)

    GLM-5 (Reasoning)
    GPT-5.4 mini28.280%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    GLM-5 (Reasoning)
    GPT-5.4 mini2.080%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    GLM-5 (Reasoning)
    GPT-5.4 mini76.6%
    Source

    Not directly comparable

  • MMMU-Pro w/ Python

    GLM-5 (Reasoning)
    GPT-5.4 mini78%
    Source

    Not directly comparable

Frequently asked questions

Which is better, GLM-5 (Reasoning) or GPT-5.4 mini?

GLM-5 (Reasoning) has the higher public score estimate, 59 versus 55.84, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.

Which is better for coding, GLM-5 (Reasoning) or GPT-5.4 mini?

The published evidence does not provide a shared weighted coding basis for both models, so BenchLM does not name a coding winner.

Which is better for agentic tasks, GLM-5 (Reasoning) or GPT-5.4 mini?

The published evidence does not provide a shared weighted agentic tasks basis for both models, so BenchLM does not name a agentic tasks winner.

Which costs less, GLM-5 (Reasoning) or GPT-5.4 mini?

For the stated presets, chat costs $0.0026 on GLM-5 (Reasoning) and $0.003 on GPT-5.4 mini; repository review costs $0.0596 and $0.051; the cache-heavy agent loop costs $0.252 and $0.075. GLM-5 (Reasoning) does not fit this workload in one request. GLM-5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, GLM-5 (Reasoning) or GPT-5.4 mini?

GPT-5.4 mini has the larger documented context window: 400K, compared with 200K.

Related comparisons

Last updated July 31, 2026

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