| Signal | Grok 4.1 Fast | Delta | MiMo-V2-Pro |
|---|---|---|---|
Capabilities | 100 | +33 | |
Benchmarks | 76 | +3 | |
Pricing | 100 | +3 | |
Context window size | 100 | +5 | |
Recency | 100 | -- | |
Output Capacity | 75 | -11 | |
| Overall Result | 4 wins | of 6 | 1 wins |
Score History
78
current score
Grok 4.1 Fast
right now
73.8
current score
xAI
Xiaomi
Grok 4.1 Fast saves you $205.00/month
That's $2460.00/year compared to MiMo-V2-Pro at your current usage level of 100K calls/month.
| Metric | Grok 4.1 Fast | MiMo-V2-Pro | Winner |
|---|---|---|---|
| Overall Score | 78 | 74 | Grok 4.1 Fast |
| Rank | #52 | #70 | Grok 4.1 Fast |
| Quality Rank | #52 | #70 | Grok 4.1 Fast |
| Adoption Rank | #52 | #70 | Grok 4.1 Fast |
| Parameters | -- | -- | -- |
| Context Window | 2000K | 1049K | Grok 4.1 Fast |
| Pricing | $0.20/$0.50/M | $1.00/$3.00/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 67 | Grok 4.1 Fast |
| Benchmarks | 76 | 73 | Grok 4.1 Fast |
| Pricing | 100 | 97 | Grok 4.1 Fast |
| Context window size | 100 | 96 | Grok 4.1 Fast |
| Recency | 100 | 100 | Grok 4.1 Fast |
| Output Capacity | 75 | 85 | MiMo-V2-Pro |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 78/100 (rank #52), placing it in the top 82% of all 290 models tracked.
Scores 74/100 (rank #70), placing it in the top 76% of all 290 models tracked.
With only a 4-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Grok 4.1 Fast offers 83% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with Grok 4.1 Fast vs $60.00/month with MiMo-V2-Pro - a $49.50 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Grok 4.1 Fast also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (78/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Grok 4.1 Fast has a moderate advantage with a 4.200000000000003-point lead in composite score. It wins on more signal dimensions, but MiMo-V2-Pro has specific strengths that could make it the better choice for certain workflows.
Best for Quality
Grok 4.1 Fast
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4.1 Fast
83% lower pricing; better value at scale
Best for Reliability
Grok 4.1 Fast
Higher uptime and faster response speeds
Best for Prototyping
Grok 4.1 Fast
Stronger community support and better developer experience
Best for Production
Grok 4.1 Fast
Wider enterprise adoption and proven at scale
by xAI
| Capability | Grok 4.1 Fast | MiMo-V2-Pro |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
xAI
Xiaomi
Grok 4.1 Fast saves you $4.44/month
That's 82% cheaper than MiMo-V2-Pro at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Grok 4.1 Fast | MiMo-V2-Pro |
|---|---|---|
| Context Window | 2M | 1.0M |
| Max Output Tokens | 30,000 | 131,072 |
| Open Source | No | No |
| Created | Nov 19, 2025 | Mar 18, 2026 |
Grok 4.1 Fast leverages xAI's multimodal architecture (text+image+file inputs) to achieve a 19-point score advantage while pricing at just $0.50/M output tokens versus MiMo-V2-Pro's $3/M. The combination of vision capabilities and web search access appears to provide significant coding assistance advantages, particularly for tasks involving screenshot debugging or real-time documentation lookups, which MiMo-V2-Pro's text-only modality cannot match.
MiMo-V2-Pro's 4.4x larger max output window (131K vs 30K tokens) makes it viable for generating entire codebases or extensive documentation in single passes, though at $3/M output tokens versus Grok's $0.50/M. For projects requiring continuous generation beyond 30K tokens, Grok would need multiple calls with context management overhead, potentially eroding its cost advantage by 20-30% while introducing state management complexity.
While Grok's 2M context window is 2x larger, MiMo-V2-Pro's architecture appears optimized for sustained performance at its 1M limit based on the narrower score gap (56 vs 75) relative to the capability differences. Xiaomi's focus on text-only processing likely yields more consistent latency for pure code analysis tasks, whereas Grok's multimodal overhead may introduce variability when processing 1M+ token codebases despite its higher ceiling.
Grok 4.1 Fast's vision capabilities enable direct screenshot-to-code workflows and visual debugging that contribute to its 75/100 score, while MiMo-V2-Pro at 56/100 requires manual transcription of visual elements. For teams working with UI/UX heavy codebases or debugging visual rendering issues, Grok's $0.20/M input pricing for multimodal processing beats the total cost of MiMo-V2-Pro's $1/M text-only input plus human annotation time.
The rank differential (#1 vs #48) stems primarily from Grok 4.1 Fast's web search integration and vision support, which enable real-time API documentation lookup and visual code comprehension - capabilities that benchmark suites heavily weight. Despite MiMo-V2-Pro matching Grok on function calling and streaming features, its 19-point score deficit suggests these shared capabilities perform meaningfully worse, likely due to Xiaomi's more limited training compute relative to xAI's infrastructure.