Data points: 101
Model compare
The readout for GPT-5.4 Mini and MiMo-V2-Flash, before the detailed comparison sheet.
Weighted outcome: GPT-5.4 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4 Mini
GPT-5.4 Mini has the higher weighted result; Model A / B score 82.7 to 17.3.
Evidence depth
101 data points
Includes 18 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GPT-5.4 Mini
The charts below split 27 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 Mini and MiMo-V2-Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 Mini | MiMo-V2-Flash |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 82.7 pts | 17.3 pts |
| Benchmark category leads | 5 categories | 1 categories |
| Operational advantages | Cheapest input price, Average speed, Free providers, Provider coverage | First-token latency |
| Context window | 400K tokens | 262.1K tokens |
| Max output | 128K tokens | 65.5K tokens |
| Modalities | Input FileImageText 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 Mini | MiMo-V2-Flash |
|---|---|---|
| Developer | OpenAI | No data |
| Released | Mar 2026 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | Other |
| Knowledge cutoff | 2025-08-31 | No data |
| OpenRouter ID | openai/gpt-5.4-mini | xiaomi/mimo-v2-flash |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 Mini and MiMo-V2-Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4 Mini
GPT-5.4 Mini is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Instruction following) and operational dimensions (Cheapest input price, Average speed, Free providers, Provider coverage).
MiMo-V2-Flash
MiMo-V2-Flash is stronger in benchmark categories (Math) and operational dimensions (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 Mini
52
Avg. score
MiMo-V2-Flash
47.1
GPT-5.4 Mini leads by 3.4
GPT-5.4 Mini leads by 6.2
GPT-5.4 Mini leads by 8.1
GPT-5.4 Mini leads by 8.0
MiMo-V2-Flash leads by 1.4
No data
GPT-5.4 Mini
GPT-5.4 Mini leads by 10.7
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4 Mini
59.0
Rank #35/83 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
59.0
Rank #35/83 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner69.3
Rank #22/89 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
31.3
Rank #79/89 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
17.1%
Rank #64/186 · confidence 4
MiMo-V2-Flash
winner20.0%
Rank #55/186 · confidence 4
GPT-5.4 Mini
82.3%
Rank #63/187 · confidence 4
MiMo-V2-Flash
winner83.5%
Rank #56/187 · confidence 4
GPT-5.4 Mini
winner56.1
Rank #23/58 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
49.8
Rank #31/58 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner49.9
Rank #23/96 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
25.9
Rank #91/96 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner57.7
Rank #32/64 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
54.7
Rank #39/64 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner44.2%
Rank #37/184 · confidence 4
MiMo-V2-Flash
38.3%
Rank #87/184 · confidence 4
GPT-5.4 Mini
winner89.8
Rank #14/90 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
75.1
Rank #47/90 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner40.0
Rank #30/99 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
24.7
Rank #66/99 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner37.5
Rank #32/90 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
15.2
Rank #85/90 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner87.5
Rank #34/96 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
65.6
Rank #82/96 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner26.6
Rank #38/96 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
8.0
Rank #72/96 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner73.3
Rank #26/86 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
39.9
Rank #70/86 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner30.2
Rank #20/54 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
12.0
Rank #42/54 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner33.5
Rank #24/50 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
16.7
Rank #41/50 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
winner1171.0
Rank #24/54 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
833.0
Rank #41/54 · confidence 1 · eval date 2026-03-15
GPT-5.4 Mini
83.3
Rank #49/84 · confidence 3 · eval date 2026-03-17
MiMo-V2-Flash
winner83.9
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 Mini | MiMo-V2-Flash |
|---|---|---|
| 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 | GPT-5.4 Mini | MiMo-V2-Flash |
|---|---|---|
10 tests | GPT-5.4 Mini speed / latency 181 tok/s / 3275ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
5 tests | GPT-5.4 Mini speed / latency |
Weighted outcome: GPT-5.4 Mini. 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 |
|---|
123 tok/s / 8529ms
input / output
No data
MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
Lumi API5 tests | GPT-5.4 Mini speed / latency 93 tok/s / 4063ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
|---|
Moyanjdc API5 tests | GPT-5.4 Mini speed / latency N/A / N/A input / output No data | MiMo-V2-Flash speed / latency 85 tok/s / 5951ms input / output No data |
|---|
Vercel AI Gateway5 tests | GPT-5.4 Mini speed / latency 195 tok/s / 1104ms input / output No data | MiMo-V2-Flash speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0.062/M/$0.370/M | MiMo-V2-Flash mimo-v2-flash speed / latency No data input / output $0/M/$0/M |
GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0.010/M/$0.062/M | MiMo-V2-Flash xiaomi/mimo-v2-flash speed / latency No data input / output $0.041/M/$0.119/M |
GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0.014/M/$0.082/M | MiMo-V2-Flash mimo-v2-flash speed / latency No data input / output $0.011/M/$0.033/M |
GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0.015/M/$0.092/M | MiMo-V2-Flash mimo-v2-flash speed / latency No data input / output $0.019/M/$0.038/M |
