Our pickMiMo (Xiaomi)
Grok
Tier-list head-to-head. MiMo (Xiaomi) takes the A-tier slot — here's the breakdown.
Spec sheet
| MiMo (Xiaomi) | Grok | |
|---|---|---|
| Tier | A-tierwin | B-tier |
| Overall score | 8.3 / 10win | 7.5 / 10 |
| Free tier | Yes | Yes |
| Starting price | $0 | $0 |
| Best for | Teams building voice-first agentic products that need a coordinated reasoning + TTS + ASR stack from a sing… | People who live on X/Twitter and want an AI that can tap into that data in real-time. |
| Last reviewed | 2026-04-25 | 2026-05-14 |
Head-to-head
Rated 1-10 on the same rubric across all 130 tools we cover.
Vibe check
How each tool actually sounds when you talk to it.
“Xiaomi's voice-first agentic stack”
“The irreverent contrarian”
What you'll pay
Look past the headline number -- entry-tier limits drive most cost surprises.
Free tier available
Free tier available
Grok 4.20 benchmarks — MiMo (Xiaomi) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| MMLU | Knowledge across 57 subjects | 88.5% |
| GPQA Diamond | Graduate-level science questions | 85% |
| HumanEval | Python code generation | 90% |
| Humanity's Last Exam | Frontier difficulty questions | 50.7% |
The decision
Use-case anchors and category strengths, side by side.
Teams building voice-first agentic products that need a coordinated reasoning + TTS + ASR stack from a single vendor. Also Chinese-market builders and developers who need strong multimodal (vision + audio) inputs in one API call without stitching three providers together. The no-surcharge 1M-context stance makes MiMo-V2.5-Pro especially attractive for long-document agentic workloads.
Visit MiMo (Xiaomi)People who live on X/Twitter and want an AI that can tap into that data in real-time. Also good for users who find mainstream chatbots too sanitized and want something with more personality.
Visit GrokBottom line
MiMo (Xiaomi) edges out Grok by 0.8 points (8.3 vs 7.5) -- a A-tier vs B-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for MiMo (Xiaomi)'s strengths, so if those categories are your priority, the lead translates.
Pricing-wise, both tools have a free tier (MiMo (Xiaomi) starts $0, Grok starts $0), so you can test either without committing. Compare what each free tier actually unlocks -- usage caps, model access, and feature gates differ a lot more than the headline price suggests, especially as both vendors have tightened limits in 2026.
By use case: pick MiMo (Xiaomi) when teams building voice-first agentic products that need a coordinated reasoning + tts + asr stack from a single vendor. Pick Grok when people who live on x/twitter and want an ai that can tap into that data in real-time. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in MiMo (Xiaomi)'s lane, the tier-list ranking and the use-case fit point the same direction; if you're in Grok's lane, the score gap matters less than the fit.
Bottom line: MiMo (Xiaomi) is the safer default for most readers, but Grok is competitive enough that the tie-breaker is your specific workload, not the spec sheet.
Keep digging
Full MiMo (Xiaomi) review
Tier A · 8.3/10
Full Grok review
Tier B · 7.5/10
MiMo (Xiaomi) alternatives
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Grok alternatives
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Built from our daily AI-tool sweep, last touched May 14, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.