API cost decision in 10 seconds

Grok 4.20 vs MiMo-V2-Pro

The standard workload cost is tied; choose by context window, provider fit, latency, or model quality.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

The standard workload cost is tied; choose by context window, provider fit, latency, or model quality.

Both models are estimated at $2.5 for the standard 1M input plus 500K output workload.

Cost-first pickTie
Context-first pickGrok 4.20
Sample savings$00%
10x traffic gap$0

Context-window winner: Grok 4.20. Cost does not separate this pair on the standard workload, so the next decision point is context window and model behavior.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Cost winner changes by workload shape: input-heavy / RAG favors MiMo-V2-Pro, balanced workload favors Grok 4.20, and output-heavy chatbot favors Grok 4.20.

Workload shapeToken mixBetter pickGrok 4.20MiMo-V2-Pro
Input-heavy / RAG5M input + 500K outputMiMo-V2-Pro$7.5$6.5
Balanced workload1M input + 1M outputGrok 4.20$3.75$4
Output-heavy chatbot1M input + 5M outputGrok 4.20$13.75$16
Cheaper input MiMo-V2-Pro $1.25 vs $1 / 1M

MiMo-V2-Pro is $0.25 cheaper per 1M input tokens (20% lower; 1.25x difference).

Cheaper output Grok 4.20 $2.5 vs $3 / 1M

Grok 4.20 is $0.5 cheaper per 1M output tokens (16.7% lower; 1.2x difference).

Larger context Grok 4.20 2M vs 1.05M

Grok 4.20 has 951.42K more context (1.91x larger).

Sample workload Tie $2.5 vs $2.5

Both models have the same estimated cost for the standard 1M input plus 500K output workload: $2.5.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Grok 4.20 Calculating… Estimated API cost
MiMo-V2-Pro Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

MiMo-V2-Pro has the lower input price; Grok 4.20 has the lower output price; Grok 4.20 offers the larger context window. For the 1M input plus 500K output sample, the standard workload cost is tied.

For a 1M input token plus 500K output token workload, the estimated API cost is $2.5 for Grok 4.20 and $2.5 for MiMo-V2-Pro.

Best Fit

Choose Grok 4.20 when you care most about lower output-token price, and larger context window.

Choose MiMo-V2-Pro when you care most about lower input-token price.

Decision Notes
  • Both models are estimated at $2.5 for the standard 1M input plus 500K output workload.
  • Both models have the same estimated cost for the standard 1M input plus 500K output workload: $2.5.
  • MiMo-V2-Pro is $0.25 cheaper per 1M input tokens (20% lower; 1.25x difference).
  • Grok 4.20 is $0.5 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
  • Grok 4.20 has 951.42K more context (1.91x larger).
Head-to-Head Specs
FeatureGrok 4.20
(xAI)		MiMo-V2-Pro
(Xiaomi)
Input Price
prompt tokens per 1M		$1.25$1
Completion Price
per 1M tokens		$2.5$3
Sample Workload Cost
1M input + 500K output		$2.5$2.5
Context Window2M1.05M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionTieBoth models are estimated at $2.5 for the standard 1M input plus 500K output workload.
High-volume input processingMiMo-V2-ProLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGrok 4.20Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGrok 4.20A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Grok Build 0.1 can replace Grok 4.20 when lower sample workload cost matters most: $2.
  • MiMo-V2-Flash can replace MiMo-V2-Pro when lower sample workload cost matters most: $0.25.
  • MiMo-V2.5 can replace MiMo-V2-Pro when lower sample workload cost matters most: $1.4.
  • MiMo-V2-Omni can replace MiMo-V2-Pro when lower sample workload cost matters most: $1.4.
Larger context near this budget
  • Llama 4 Scout offers 10M context with $0.23 sample workload cost.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

Open cheapest models

Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

xAI catalog

Review all tracked xAI models before deciding whether this matchup is the right shortlist.

Open xAI models

Xiaomi catalog

Check other Xiaomi models with comparable pricing, context, or release timing.

Open Xiaomi models
Grok 4.20

Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...

MiMo-V2-Pro

MiMo-V2-Pro is Xiaomi's flagship foundation model, featuring over 1T total parameters and a 1M context length, deeply optimized for agentic scenarios. It is highly adaptable to general agent frameworks like...