AI Model Comparison

Grok 4.3 (low) vs MiMo-V2.5

Compare Grok 4.3 (low) vs MiMo-V2.5 with benchmark results, speed, pricing, and practical workflow guidance.

Best For Grok 4.3 (low)

  • Instruction following tasks
  • LCR benchmark requirements
  • Specialized xAI workflows

Best For MiMo-V2.5

  • High-speed coding tasks
  • Cost-sensitive applications
  • Low-latency response needs

MiMo-V2.5 outperforms Grok 4.3 (low) across nearly all intelligence and coding benchmarks while offering significantly lower pricing and faster response times, making it the superior technical choice for most users.

Quick Take

Released in late April 2026, both models represent the latest in AI development. MiMo-V2.5 by Xiaomi establishes a clear lead in core performance metrics, while xAI’s Grok 4.3 (low) offers a competitive alternative with a distinct performance profile.

Benchmark Read

MiMo-V2.5 leads in the primary intelligence and coding indices, scoring 49 and 42.1 respectively, compared to Grok 4.3 (low)’s 43.9 and 31.6. In specific benchmarks, MiMo-V2.5 shows superior results in HLE (0.252 vs 0.173), SciCode (0.431 vs 0.419), TerminalBench Hard (0.416 vs 0.265), and TAU2 (0.906 vs 0.888). Grok 4.3 (low) holds a slight advantage in IFBench (0.809 vs 0.671) and LCR (0.64 vs 0.626). Math index data remains unavailable for both models.

Cost and Speed

MiMo-V2.5 is significantly more cost-effective, with a blended price of $0.72/1M tokens compared to Grok 4.3 (low)’s $1.56/1M. Xiaomi’s model also delivers faster output speeds at 91.485 tok/s versus 80.284 tok/s. Most notably, MiMo-V2.5 offers a time to first token of 2.699s, drastically outperforming Grok 4.3 (low)’s 13.852s, which may impact real-time application responsiveness.

Best Fit

Grok 4.3 (low) is best suited for users who prioritize performance on specific instruction-following tasks (IFBench) and LCR benchmarks. MiMo-V2.5 is the ideal choice for developers and enterprises seeking high-speed, cost-efficient coding assistance and superior general intelligence performance.

Benchmark table

Side-by-side scores, speed, and pricing for the selected models.

Metric xAI Grok 4.3 (low) Xiaomi MiMo-V2.5
Index Scores
Intelligence Index 43.9 49.0
Coding Index 31.6 42.1
Math Index--
Benchmark Scores
GPQA 84.3 84.9
SciCode 41.9 43.1
IFBench 81.0 67.1
HLE 17.3 25.2
LCR 64.0 62.7
TAU2 88.9 90.6
TerminalBench Hard 26.5 41.7

Verdict

For most users, MiMo-V2.5 is the clear winner. It provides higher intelligence and coding scores, faster token generation, and lower costs. Grok 4.3 (low) is only recommended if your specific workflow requires the unique performance profile of its architecture, as it currently lags behind Xiaomi’s offering in both speed and efficiency metrics.

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