Data points: 70
The readout for GLM-5 Turbo 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 2 to 4.
Evidence depth
70 data points
Includes 3 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 13 high-signal samples across speed, scores, and audit health.
Model compare GLM-5 Turbo vs GPT-5.4glm-5-turbo-vs-gpt-5-4 | Model A GLM-5 Turbo | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 4 wins |
| Where it leads | Cheapest input price, Average speed | First-token latency, Free providers, Provider coverage, Recent tests |
| Model metadata | GLM-5 Turbo exposes 262.1K tokens; notable signals: Text input, Text output, Tool calling, JSON mode. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | Zhipu AI | OpenAI |
| Context window | 262.1K tokens | 1.1M tokens |
| Max output | 131.1K tokens | 128K tokens |
| Released | Mar 2026 | Mar 2026 |
| Modalities | Input Text Output Text | Input TextImageFile Output Text |
| Features | Text inputText outputTool callingJSON 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-turbo | openai/gpt-5.4 |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-5 Turbo | GPT-5.4 |
|---|---|---|
| GPQA | 84.7%#34 | 92.0%#3 |
| SciCode | 43.6%#27 | 56.6%#3 |
| HLE | 25.4%#28 | 41.6%#4 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-5 Turbo | GPT-5.4 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-5 Turbo | GPT-5.4 |
|---|---|---|
Mars HK125 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 49 tok/s / 6084ms input / output No data |
Mars HK100 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 57 tok/s / 3556ms input / output No data |
星见雅 API20 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data |
6i2 API5 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 428 tok/s / 4171ms input / output No data |
Chlink API5 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 50 tok/s / 5476ms input / output No data |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.0073/M / $0.0073/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.365/M / $0.365/M | |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.082/M / $0.274/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.171/M / $1.03/M | |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.274/M / $1.21/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.132/M / $0.789/M | |
GLM-5 Turbo GLM-5-Turbo speed / latency No data input / output $0.274/M / $1.10/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $10.27/M / $61.64/M | |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.288/M / $0.959/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.599/M / $3.60/M |
This report only uses LMSpeed data for GLM-5 Turbo and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-5 Turbo | GPT-5.4 |
|---|---|---|
| When to choose each model | GLM-5 Turbo GLM-5 Turbo is stronger when you prioritize Cheapest input price, Average speed. | GPT-5.4 GPT-5.4 is stronger when you prioritize First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 70 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-5 Turbo vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
