Data points: 64
The readout for DeepSeek V4 Pro 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
64 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare DeepSeek V4 Pro vs GPT-5.4deepseek-v4-pro-vs-gpt-5-4 | Model A DeepSeek V4 Pro | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | Free providers | Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests |
| Model metadata | No OpenRouter metadata is available yet for this model. | No OpenRouter metadata is available yet for this model. |
| Developer | DeepSeek | OpenAI |
| Context window | No data | No data |
| Max output | No data | No data |
| Released | No data | No data |
| Modalities | No data | No data |
| Features | None listed | None listed |
| Parameters | No data | No data |
| Tokenizer | No data | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | No data |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | DeepSeek V4 Pro | GPT-5.4 |
|---|---|---|
| GPQA | 88.8%#13 | 92.0%#3 |
| SciCode | 50.0%#12 | 56.6%#3 |
| HLE | 35.9%#8 | 41.6%#4 |
| Output price | $0.870/M#13 | $15.00/M#43 |
| Input price | $0.435/M#17 | $2.50/M#36 |
| Blended price | $0.544/M#26 | $5.63/M#62 |
| Time to first token | 1.06 s#40 | 197.76 s#110 |
| Output speed | 53.2 tok/s#83 | 85.8 tok/s#57 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V4 Pro | 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 | DeepSeek V4 Pro | GPT-5.4 |
|---|---|---|
Mars HK125 tests | DeepSeek V4 Pro speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 49 tok/s / 6084ms input / output No data |
6345ywz API25 tests | DeepSeek V4 Pro speed / latency 27 tok/s / 51460ms input / output No data | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data |
Sub2API25 tests | DeepSeek V4 Pro speed / latency 32 tok/s / 15358ms input / output No data | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data |
星见雅 API25 tests | DeepSeek V4 Pro speed / latency 26 tok/s / 14879ms input / output No data | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data |
6i2 API20 tests | DeepSeek V4 Pro speed / latency 189 tok/s / 4115ms input / output No data | GPT-5.4 speed / latency 428 tok/s / 4171ms input / output No data |
DeepSeek V4 Pro deepseek-ai/deepseek-v4-pro speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5-4 speed / latency No data input / output $0.080/M / $0.080/M | |
DeepSeek V4 Pro deepseek-v4-pro speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $75.00/M / $450.00/M | |
DeepSeek V4 Pro deepseek-ai/deepseek-v4-pro speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $2.50/M / $15.00/M | |
DeepSeek V4 Pro deepseek-v4-pro speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0/M / $0/M | |
DeepSeek V4 Pro deepseek-v4-pro-free speed / latency No data input / output $0.0007/M / $0.0007/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.365/M / $0.365/M |
This report only uses LMSpeed data for DeepSeek V4 Pro and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | DeepSeek V4 Pro | GPT-5.4 |
|---|---|---|
| When to choose each model | DeepSeek V4 Pro DeepSeek V4 Pro is stronger when you prioritize Free providers. | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 64 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from DeepSeek V4 Pro 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.
