Grok 4.20 vs MiMo-V2.6-Pro-UltraSpeed
Price, context window & benchmark comparison
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Compare different models
Verdict: Grok 4.20 is 3.5× cheaper than MiMo-V2.6-Pro-UltraSpeed on a typical 3:1 input/output mix. Grok 4.20 has the larger context window (2M vs 1M).
| Grok 4.20 | MiMo-V2.6-Pro-UltraSpeed | |
|---|---|---|
| Input price / 1M | $1.25 | $4.35 |
| Output price / 1M | $2.50 | $8.70 |
| Blended price (3:1) | $1.56 | $5.44 |
| Cached input / 1M | $0.20 | $0.036 |
| Context window | 2M | 1M |
| Max output | 1.8M | 131K |
| Intelligence index | — | — |
| Coding index | — | — |
| Providers | — | 1 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-03-31 | 2026-09-21 |
| Retirement | — | — |
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FAQ
Which is cheaper, Grok 4.20 or MiMo-V2.6-Pro-UltraSpeed?
Grok 4.20 is 3.5× cheaper than MiMo-V2.6-Pro-UltraSpeed on a typical 3:1 input/output mix.
Grok 4.20 vs MiMo-V2.6-Pro-UltraSpeed: which has a bigger context window?
Grok 4.20: 2,000,000 tokens. MiMo-V2.6-Pro-UltraSpeed: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Grok 4.20 ≈ $3,750, MiMo-V2.6-Pro-UltraSpeed ≈ $13,050.
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