Data points: 90
The readout for GPT-5.4 and MiMo-V2.5, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 4 to 2.
Evidence depth
90 data points
Includes 8 benchmark rows, 2 audit samples, and 8 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 GPT-5.4 vs MiMo-V2.5gpt-5-4-vs-mimo-v2-5 | Model A GPT-5.4 | Model B MiMo-V2.5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests | Average speed, First-token latency |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-5.4 | MiMo-V2.5 |
|---|---|---|
| GPQA | 92.0%#3 | 84.9% |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | MiMo-V2.5 |
|---|---|---|
Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 83 7279 |
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 |
|---|---|---|
20 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | MiMo-V2.5 |
This report only uses LMSpeed data for GPT-5.4 and MiMo-V2.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | MiMo-V2.5 |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | MiMo-V2.5 MiMo-V2.5 is stronger when you prioritize Average speed, First-token latency. |
TL;DR: GPT-5.4 leads across 90 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs MiMo-V2.5 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 exposes 1.0M tokens; notable signals: Text input, Image input, Audio input, Text output. |
|---|---|---|
| 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 TextAudioImagevideo Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputAudio inputText outputTool callingJSON 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 |
| References | No data | No data |
| SciCode | 56.6%#3 | 43.1%#30 |
|---|
| HLE | 41.6%#4 | 25.2%#29 |
|---|
| Output price | $15.00/M#44 | $0.280/M#4 |
|---|
| Input price | $2.50/M#37 | $0.140/M#8 |
|---|
| Blended price | $5.63/M#63 | $0.175/M#10 |
|---|
| Output speed | 92.4 tok/s#56 | 81.3 tok/s#63 |
|---|
| Time to first token | 134.24 s#110 | 3.34 s#77 |
|---|
MiMo-V2.5 mimo-v2.5 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 mimo-v2.5 No audit yet |
|---|
speed / latency
66 tok/s / 6202ms
input / output
No data
Sub2API20 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | MiMo-V2.5 speed / latency N/A / N/A 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 speed / latency N/A / N/A input / output No data |
|---|
6i2 API10 tests | GPT-5.4 speed / latency 428 tok/s / 4171ms input / output No data | MiMo-V2.5 speed / latency 93 tok/s / 5336ms input / output No data |
|---|
Fengsili API10 tests | GPT-5.4 speed / latency 88 tok/s / 6075ms input / output No data | MiMo-V2.5 speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 gpt-5.4 speed / latency No data input / output $0.171/M / $1.03/M | MiMo-V2.5 mimo-v2.5 speed / latency No data input / output $0.0096/M / $0.019/M |
GPT-5.4 gpt-5.4-medium speed / latency No data input / output $0.014/M / $0.085/M | MiMo-V2.5 mimo-v2.5 speed / latency No data input / output $0.025/M / $0.058/M |
GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.342/M / $2.05/M | MiMo-V2.5 mimo-v2.5 speed / latency No data input / output $0.019/M / $0.038/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
