Data points: 48
The readout for DeepSeek V2.5 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
48 data points
Includes 0 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 6 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
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Model compare DeepSeek V2.5 vs GPT-5.4deepseek-v2-5-vs-gpt-5-4 | Model A DeepSeek V2.5 | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests |
| Model metadata | No OpenRouter metadata is available yet for this model. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | DeepSeek | OpenAI |
| Context window | No data | 1.1M tokens |
| Max output | No data | 128K tokens |
| Released | No data | Mar 2026 |
| Modalities | No data | Input TextImageFile Output Text |
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | openai/gpt-5.4 |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
DeepSeek V2.5
76.3
Avg. score
GPT-5.4
66.6
Selected category
Agents
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | DeepSeek V2.5 | 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 V2.5 | GPT-5.4 |
|---|---|---|
天絮 API5 tests | DeepSeek V2.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 46 tok/s / 3291ms input / output No data |
OpenRouter Fans0 tests | DeepSeek V2.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
Synapse0 tests | DeepSeek V2.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
WAADRI0 tests | DeepSeek V2.5 deepseek-ai/DeepSeek-V2.5 speed / latency N/A / N/A input / output $0.190/M / $0.190/M | GPT-5.4 openai/gpt-5.4 speed / latency N/A / N/A input / output $2.50/M / $15.00/M |
Xiao Wan0 tests | DeepSeek V2.5 deepseek-ai/DeepSeek-V2.5 speed / latency N/A / N/A input / output $75.00/M / $75.00/M | GPT-5.4 gpt-5.4 speed / latency N/A / N/A input / output $75.00/M / $450.00/M |
DeepSeek V2.5 deepseek-ai/DeepSeek-V2.5 speed / latency No data input / output $0.979/M / $3.92/M | GPT-5.4 gpt-5.4-2026-03-05 speed / latency No data input / output $36.71/M / $220.28/M |
This report only uses LMSpeed data for DeepSeek V2.5 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | DeepSeek V2.5 | GPT-5.4 |
|---|---|---|
| When to choose each model | DeepSeek V2.5 DeepSeek V2.5 is stronger when you prioritize First-token latency. | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 48 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from DeepSeek V2.5 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.
