Data points: 95
The readout for GPT-5.4 and MiMo-V2.5-Pro, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 5 to 1.
Evidence depth
95 data points
Includes 8 benchmark rows, 3 audit samples, and 8 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 GPT-5.4 vs MiMo-V2.5-Progpt-5-4-vs-mimo-v2-5-pro | Model A GPT-5.4 | Model B MiMo-V2.5-Pro |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Average speed, First-token latency, Free providers, Provider coverage, Recent tests | Cheapest input price |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-5.4 | MiMo-V2.5-Pro |
|---|---|---|
| GPQA | 92.0%#3 | 86.6% |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | MiMo-V2.5-Pro |
|---|---|---|
Winner: MiMo-V2.5-Pro | GPT-5.4 gpt-5.4 No audit yet | MiMo-V2.5-Pro mimo-v2.5-pro Audit score 83 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | MiMo-V2.5-Pro |
|---|---|---|
25 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | MiMo-V2.5-Pro |
This report only uses LMSpeed data for GPT-5.4 and MiMo-V2.5-Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | MiMo-V2.5-Pro |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Average speed, First-token latency, Free providers, Provider coverage, Recent tests. | MiMo-V2.5-Pro MiMo-V2.5-Pro is stronger when you prioritize Cheapest input price. |
TL;DR: GPT-5.4 leads across 95 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs MiMo-V2.5-Pro into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. | MiMo-V2.5-Pro exposes 1.0M tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. |
|---|---|---|
| Developer | OpenAI | No data |
| Context window | 1.1M tokens | 1.0M tokens |
| Max output | 128K tokens | 131.1K tokens |
| Released | Mar 2026 | Apr 2026 |
| Modalities | Input TextImageFile Output Text | Input Text Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | xiaomi/mimo-v2.5-pro |
| References | No data | No data |
| SciCode | 56.6%#3 | 50.2%#11 |
|---|
| HLE | 41.6%#4 | 33.8%#10 |
|---|
| Output price | $15.00/M#44 | $0.870/M#13 |
|---|
| Input price | $2.50/M#37 | $0.435/M#17 |
|---|
| Blended price | $5.63/M#63 | $0.544/M#26 |
|---|
| Output speed | 92.4 tok/s#56 | 38.7 tok/s#102 |
|---|
| Time to first token | 134.24 s#110 | 2.13 s#71 |
|---|
TokenFluxWinner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 83 727980100 | MiMo-V2.5-Pro mimo-v2.5-pro No audit yet |
|---|
R的API小站Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 82 806880100 | MiMo-V2.5-Pro mimo-v2.5-pro No audit yet |
|---|
speed / latency
44 tok/s / 2770ms
input / output
No data
星见雅 API20 tests | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data | MiMo-V2.5-Pro speed / latency N/A / N/A input / output No data |
|---|
6345ywz API15 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | MiMo-V2.5-Pro speed / latency N/A / N/A input / output No data |
|---|
Fengsili API15 tests | GPT-5.4 speed / latency 88 tok/s / 6075ms input / output No data | MiMo-V2.5-Pro speed / latency 61 tok/s / 6128ms input / output No data |
|---|
Omini Api10 tests | GPT-5.4 speed / latency 51 tok/s / 1443ms input / output No data | MiMo-V2.5-Pro speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.365/M / $0.365/M | MiMo-V2.5-Pro mimo-v2.5-pro speed / latency No data input / output $0.0000/M / $0.0000/M |
GPT-5.4 gpt-5.4-medium speed / latency No data input / output $0.014/M / $0.085/M | MiMo-V2.5-Pro mimo-v2.5-pro speed / latency No data input / output $0.025/M / $0.058/M |
GPT-5.4 gpt-5.4 speed / latency No data input / output $0.600/M / $4.80/M | MiMo-V2.5-Pro mimo-v2.5-pro speed / latency No data input / output $0.050/M / $0.050/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
