Data points: 105
Model compare
The readout for GPT-5.4 and MiMo-V2-Flash, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 92 to 8.
Evidence depth
105 data points
Includes 18 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 26 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.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for GPT-5.4 and MiMo-V2-Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | MiMo-V2-Flash |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 92.0 pts | 8.0 pts |
| Benchmark category leads | 6 categories | 0 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | Average speed, First-token latency |
| Context window | 1.1M tokens | 262.1K tokens |
| Max output | 128K tokens | 65.5K tokens |
| Modalities | Input TextImageFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | GPT-5.4 | MiMo-V2-Flash |
|---|---|---|
| Developer | OpenAI | No data |
| Released | Mar 2026 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | xiaomi/mimo-v2-flash |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and MiMo-V2-Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
MiMo-V2-Flash
MiMo-V2-Flash has these operational advantages: Average speed, First-token latency.
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
GPT-5.4
57.8
Avg. score
MiMo-V2-Flash
47.1
GPT-5.4 leads by 8.5
GPT-5.4 leads by 11.4
GPT-5.4 leads by 10.9
GPT-5.4 leads by 19.8
GPT-5.4 leads by 6.5
No data
GPT-5.4
GPT-5.4 leads by 10.9
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
winner67.0
Rank #19/83 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
59.0
Rank #35/83 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner74.0
Rank #5/89 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
31.3
Rank #79/89 · confidence 1 · eval date 2026-03-15
GPT-5.4
10.6%
Rank #90/186 · confidence 4
MiMo-V2-Flash
winner20.0%
Rank #55/186 · confidence 4
GPT-5.4
74.8%
Rank #96/187 · confidence 4
MiMo-V2-Flash
winner83.5%
Rank #56/187 · confidence 4
GPT-5.4
winner56.6
Rank #3/96 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
25.9
Rank #91/96 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner71.0
Rank #10/58 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
49.8
Rank #31/58 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner47.1%
Rank #23/184 · confidence 4
MiMo-V2-Flash
38.3%
Rank #87/184 · confidence 4
GPT-5.4
46.7
Rank #51/64 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
winner54.7
Rank #39/64 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner41.6
Rank #7/96 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
8.0
Rank #72/96 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner51.4
Rank #9/99 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
24.7
Rank #66/99 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner92.0
Rank #10/96 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
65.6
Rank #82/96 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner50.0
Rank #10/90 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
15.2
Rank #85/90 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner88.6
Rank #19/90 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
75.1
Rank #47/90 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner73.9
Rank #24/86 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
39.9
Rank #70/86 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner41.1
Rank #11/54 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
12.0
Rank #42/54 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner44.7
Rank #11/50 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
16.7
Rank #41/50 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner1395.0
Rank #11/54 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
833.0
Rank #41/54 · confidence 1 · eval date 2026-03-15
GPT-5.4
winner87.1
Rank #37/84 · confidence 3 · eval date 2026-03-05
MiMo-V2-Flash
83.9
Rank #48/84 · confidence 1 · eval date 2026-03-15
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | MiMo-V2-Flash |
|---|---|---|
Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 83 727980100 | MiMo-V2-Flash mimo-v2-flash No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | MiMo-V2-Flash |
|---|---|---|
15 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingJSON modeReasoning |
|---|
51 tok/s / 2526ms
input / output
No data
MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
Fengsili API10 tests | GPT-5.4 speed / latency 88 tok/s / 6075ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
|---|
Claw API5 tests | GPT-5.4 speed / latency 53 tok/s / 5106ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
|---|
DNSHE5 tests | GPT-5.4 speed / latency 51 tok/s / 5463ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 gpt-5.4 speed / latency No data input / output $0.240/M/$1.44/M | MiMo-V2-Flash mimo-v2-flash speed / latency No data input / output $0/M/$0/M |
GPT-5.4 gpt-5.4-high speed / latency No data input / output $0.050/request | MiMo-V2-Flash MiMo-V2-Flash speed / latency No data input / output $0.010/request |
