Compare/GPT-5.1 Codex mini (high) vs MiMo-V2-Omni-0327

GPT-5.1 Codex mini (high)vsMiMo-V2-Omni-0327

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

OpenAI

GPT-5.1 Codex mini (high)

Input
$0.25/M
Output
$2/M
Speed
176 tok/s
TTFT
5.30s
Xiaomi

MiMo-V2-Omni-0327

Input
$0.4/M
Output
$2/M
Speed
107 tok/s
TTFT
1.43s

Winner by Category

Cheaper
GPT-5.1 Codex mini (high)
Faster (tok/s)
GPT-5.1 Codex mini (high)
Lower Latency
MiMo-V2-Omni-0327
Benchmarks (6-5)
GPT-5.1 Codex mini (high)

Pricing Comparison

MetricGPT-5.1 Codex mini (high)MiMo-V2-Omni-0327
Input ($/M tokens)$0.25$0.4
Output ($/M tokens)$2$2
Cost for 1M input + 100K output tokens:
GPT-5.1 Codex mini (high)$0.45
MiMo-V2-Omni-0327$0.60

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5.1 Codex mini (high)
176 tok/s
MiMo-V2-Omni-0327
107 tok/s
Time to First Token (seconds) — lower is better
GPT-5.1 Codex mini (high)
5.30s
MiMo-V2-Omni-0327
1.43s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
38.644.9
Coding Index
36.436.9
Math Index
91.7
GPQA Diamond
81.3%85.5%
MMLU-Pro
82.0%
LiveCodeBench
83.6%
AIME 2025
91.7%
MATH-500
Humanity's Last Exam
16.9%20.4%
SciCode
42.6%39.5%
IFBench
67.9%67.3%
TerminalBench
33.3%35.6%
GPT-5.1 Codex mini (high)6 wins
5 winsMiMo-V2-Omni-0327

Frequently Asked Questions

Which is cheaper, GPT-5.1 Codex mini (high) or MiMo-V2-Omni-0327?

GPT-5.1 Codex mini (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.69/M tokens vs $0.80/M for MiMo-V2-Omni-0327.

Which model performs better on benchmarks?

GPT-5.1 Codex mini (high) wins 6 out of 12 benchmarks compared to 5 for MiMo-V2-Omni-0327. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.1 Codex mini (high) generates tokens faster at 176 tok/s vs 107 tok/s. However, MiMo-V2-Omni-0327 has lower time-to-first-token (1.43s vs 5.30s).

When should I use GPT-5.1 Codex mini (high) vs MiMo-V2-Omni-0327?

Choose based on your priorities: GPT-5.1 Codex mini (high) for lower cost, GPT-5.1 Codex mini (high) for stronger benchmark performance, and GPT-5.1 Codex mini (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.