Data points: 85
The readout for GLM-5 and GPT-5.4, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 1 to 5.
Evidence depth
85 data points
Includes 8 benchmark rows, 1 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 19 high-signal samples across speed, scores, and audit health.
Model compare GLM-5 vs GPT-5.4glm-5-vs-gpt-5-4 | Model A GLM-5 | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | Cheapest input price | Average speed, First-token latency, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-5 | GPT-5.4 |
|---|---|---|
| GPQA | 82.0%#49 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-5 | GPT-5.4 |
|---|---|---|
Winner: GPT-5.4 | GLM-5 glm-5 No audit yet | GPT-5.4 gpt-5.4 Audit score |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-5 | GPT-5.4 |
|---|---|---|
125 tests | GLM-5 speed / latency N/A / N/A input / output No data | GPT-5.4 |
This report only uses LMSpeed data for GLM-5 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-5 | GPT-5.4 |
|---|---|---|
| When to choose each model | GLM-5 GLM-5 is stronger when you prioritize Cheapest input price. | GPT-5.4 GPT-5.4 is stronger when you prioritize Average speed, First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 85 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-5 vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GLM-5 exposes 202.8K tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Zhipu AI | OpenAI |
| Context window | 202.8K tokens | 1.1M tokens |
| Max output | No data | 128K tokens |
| Released | Feb 2026 | Mar 2026 |
| Modalities | Input Text Output Text | Input TextImageFile Output Text |
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | z-ai/glm-5 | openai/gpt-5.4 |
| References | No data | No data |
| SciCode | 46.2%#19 | 56.6%#3 |
|---|
| HLE | 27.2%#22 | 41.6%#4 |
|---|
| Time to first token | 0.84 s#25 | 134.24 s#110 |
|---|
| Input price | $1.00/M#26 | $2.50/M#37 |
|---|
| Output price | $3.20/M#29 | $15.00/M#44 |
|---|
| Blended price | $1.55/M#47 | $5.63/M#63 |
|---|
| Output speed | 75.5 tok/s#70 | 92.4 tok/s#56 |
|---|
90
speed / latency
49 tok/s / 6084ms
input / output
No data
天宫造物50 tests | GLM-5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 50 tok/s / 7305ms input / output No data |
|---|
星见雅 API25 tests | GLM-5 speed / latency 23 tok/s / 39702ms input / output No data | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data |
|---|
6345ywz API15 tests | GLM-5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data |
|---|
Thorbase15 tests | GLM-5 speed / latency 43 tok/s / 24098ms input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
|---|
GLM-5 glm-5 speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $2.50/M / $15.00/M |
GLM-5 glm-5 speed / latency No data input / output $0.010/M / $0.010/M | GPT-5.4 gpt-5.4-high speed / latency No data input / output $0.050/M / $0.050/M |
GLM-5 glm-5 speed / latency No data input / output $0.010/M / $0.058/M | GPT-5.4 gpt-5.4-medium speed / latency No data input / output $0.014/M / $0.085/M |
GLM-5 glm-5 speed / latency No data input / output $0.022/M / $0.088/M | GPT-5.4 gpt-5.4-xhigh speed / latency No data input / output $0.034/M / $0.205/M |
GLM-5 GLM-5 speed / latency No data input / output $0.040/M / $0.040/M | GPT-5.4 gpt-5.4-xhigh speed / latency No data input / output $2.50/M / $15.00/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
