Grok 4.20 (Non-Reasoning) vs Hy4 preview vs MiMo-V2-Pro
Grok 4.20 (Non-Reasoning) comes out ahead, 52 to 44 and 42 on our weighted score, though Hy4 preview is 20% cheaper per token.
- Our pick
xAIGrok 4.20 (Non-Reasoning)
52/100- ECI—
- Price$1.25 / $2.50
- Context1M
TencentHy4 preview
44/100- ECI—
- Price$0.834 / $2.50
- Context1.02M
XiaomiMiMo-V2-Pro
42/100- ECI—
- Price$1.00 / $3.00
- Context1.05M
Grok 4.20 (Non-Reasoning) is our pick
Grok 4.20 (Non-Reasoning) is the better all-round choice, scoring 52/100 against Hy4 preview (44) and MiMo-V2-Pro (42). It leads on inputs & features. Hy4 preview wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceHy4 previewHy4 preview $1.25 · MiMo-V2-Pro $1.50 · Grok 4.20 (Non-Reasoning) $1.56 per 1M tokens (3:1 blend)
- Longest contextMiMo-V2-ProMiMo-V2-Pro 1,048,576 · Hy4 preview 1,024,000 · Grok 4.20 (Non-Reasoning) 1,000,000 tokens
- Widest inputsGrok 4.20 (Non-Reasoning)Grok 4.20 (Non-Reasoning): Text, Images, PDFs · Hy4 preview: Text · MiMo-V2-Pro: Text
- Self-hostingHy4 previewPublishes downloadable weights
| Measure | Weight | Grok 4.20 (Non-Reasoning) | Hy4 preview | MiMo-V2-Pro |
|---|---|---|---|---|
| Price | 50% | 39 | 43 | 40 |
| Inputs & features | 30% | 70 | 35 | 35 |
| Context window | 20% | 60 | 60 | 61 |
| Overall | 100% | 52/100 | 44/100 | 42/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Grok 4.20 (Non-Reasoning)xAI | Hy4 previewTencent | MiMo-V2-ProXiaomi |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $1.25 | $0.834 (best) | $1.00 |
| Output | $2.50 (best) | $2.50 | $3.00 |
| Cached input | $0.20 | $0.042 (best) | — |
| Blended (3:1) | $1.56 | $1.25 (best) | $1.50 |
| Long-context rate | Over 200K: $2.50 / $5.00 | Same rate | Same rate |
| Price source | Official xAI API | Official Tencent TokenHub API | Median of 1 providers |
| Limits | |||
| Context window | 1,000,000 tokens | 1,024,000 tokens | 1,048,576 tokens (best) |
| Max output | 30,000 tokens | 64,000 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | No | No |
| PDFs | Yes | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | No | Yeshigh | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Open | Proprietary |
| API model ID | grok-4.20-0309-non-reasoning | hy4-preview | — |
| API providers | 13 | 17 (best) | 2 |
| Released | Mar 9, 2026 | Aug 28, 2026 | Mar 18, 2026 |
| Knowledge cutoff | — | — | Dec 2024 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Grok 4.20 (Non-Reasoning)$17.50
- Hy4 preview$13.34
- MiMo-V2-Pro$16.00
Which should you choose?
Which is better: Grok 4.20 (Non-Reasoning), Hy4 preview or MiMo-V2-Pro?
Grok 4.20 (Non-Reasoning) is the better all-round choice, scoring 52/100 against Hy4 preview (44) and MiMo-V2-Pro (42). It leads on inputs & features. Hy4 preview wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Grok 4.20 (Non-Reasoning), Hy4 preview or MiMo-V2-Pro?
Hy4 preview is cheaper at $0.834 input / $2.50 output per million tokens (official Tencent TokenHub API price). MiMo-V2-Pro costs $1.00 input / $3.00 output per million tokens (median across 1 API provider); Grok 4.20 (Non-Reasoning) costs $1.25 input / $2.50 output per million tokens (official xAI API price). At a typical mix of three input tokens to one output token, that is $1.25 per million tokens for Hy4 preview versus $1.50 for MiMo-V2-Pro (1.2× as much) and $1.56 for Grok 4.20 (Non-Reasoning) (1.2× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Grok 4.20 (Non-Reasoning) has not been scored yet, Hy4 preview has not been scored yet and MiMo-V2-Pro has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Grok 4.20 (Non-Reasoning), Hy4 preview and MiMo-V2-Pro yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
MiMo-V2-Pro has the largest context window at 1,048,576 tokens, against 1,024,000 for Hy4 preview and 1,000,000 for Grok 4.20 (Non-Reasoning). Maximum output per response: Grok 4.20 (Non-Reasoning) up to 30,000, Hy4 preview up to 64,000, MiMo-V2-Pro up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Grok 4.20 (Non-Reasoning) accepts text, images and PDFs; Hy4 preview accepts text; MiMo-V2-Pro accepts text. Grok 4.20 (Non-Reasoning) handles the widest range of inputs.
Are any of these open source?
Hy4 preview publishes its weights and can be self-hosted; Grok 4.20 (Non-Reasoning) and MiMo-V2-Pro is proprietary.
Which is newer?
Hy4 preview is the newest, released Aug 28, 2026. MiMo-V2-Pro came out Mar 18, 2026; Grok 4.20 (Non-Reasoning) came out Mar 9, 2026. Knowledge cutoff: MiMo-V2-Pro Dec 2024.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
