Grok 4.5 vs MiMo-V2.6-Pro
Grok 4.5 and MiMo-V2.6-Pro are closely matched at 44.9 and 49.8 on the LLM Stats Score. MiMo-V2.6-Pro is 5.5x cheaper per token.
xAI · Xiaomi · Updated for 2026
Which is better?
Grok 4.5 and MiMo-V2.6-Pro are closely matched on the overall LLM Stats Score at 44.9 and 49.8.
In the 3 individual benchmarks reported for both models, MiMo-V2.6-Pro wins 3; this is a narrower head-to-head signal than the composite indexes.
On price, MiMo-V2.6-Pro is roughly 5.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
MiMo-V2.6-Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok 4.5
- you want predictable pricing at $2.00/M input and $6.00/M output
Choose MiMo-V2.6-Pro
- your work emphasizes coding and agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 3 of 3 exact shared results
- cost matters — it's about 5.5x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Sep 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
15 reported for Grok 4.5 · 18 for MiMo-V2.6-Pro
Grok 4.5 outperforms in 0 benchmarks, while MiMo-V2.6-Pro is better at 3 benchmarks (DeepSWE 1.1, Terminal-Bench 2.1, Terminal-Bench 4.0).
MiMo-V2.6-Pro significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Grok 4.5 ($2.00/1M tokens) is 4.6x more expensive than MiMo-V2.6-Pro ($0.43/1M tokens).
For output processing, Grok 4.5 ($6.00/1M tokens) is 6.9x more expensive than MiMo-V2.6-Pro ($0.87/1M tokens).
In conclusion, Grok 4.5 is more expensive than MiMo-V2.6-Pro.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
MiMo-V2.6-Pro accepts 1,048,576 input tokens compared to Grok 4.5's 500,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Grok 4.5 and MiMo-V2.6-Pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok 4.5
MiMo-V2.6-Pro
License
Usage and distribution terms
Grok 4.5 is licensed under a proprietary license, while MiMo-V2.6-Pro uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
Grok 4.5 was released on 2026-07-16, while MiMo-V2.6-Pro was released on 2026-09-22.
MiMo-V2.6-Pro is 2 months newer than Grok 4.5.
Jul 16, 2026
2 months ago
Sep 22, 2026
0 days ago
2mo newerKnowledge Cutoff
When training data ends
Grok 4.5 has a documented knowledge cutoff of 2026-02-01, while MiMo-V2.6-Pro's cutoff date is not specified.
We can confirm Grok 4.5's training data extends to 2026-02-01, but cannot make a direct comparison without MiMo-V2.6-Pro's cutoff date.
Feb 2026
—
Provider Availability
Grok 4.5 is available from xAI. MiMo-V2.6-Pro is available from Xiaomi.
Grok 4.5
MiMo-V2.6-Pro
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok 4.5 and MiMo-V2.6-Pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok 4.5 vs MiMo-V2.6-Pro.