API cost decision in 10 seconds

Grok 4.20 Multi-Agent vs Mistral Small 4

Pick Mistral Small 4 for lower cost; pick Grok 4.20 Multi-Agent only if the larger context window matters more.

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

Budget verdict

Pick Mistral Small 4 for lower cost; pick Grok 4.20 Multi-Agent only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Mistral Small 4 is estimated at $0.45 vs $5 for Grok 4.20 Multi-Agent, saving $4.55 (91% lower).

Cost-first pickMistral Small 4
Context-first pickGrok 4.20 Multi-Agent
Sample savings$4.5591%
10x traffic gap$45.5

Grok 4.20 Multi-Agent has more context, but Mistral Small 4 saves $4.55 on the standard workload. At 10x that traffic, the same price gap is about $45.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Mistral Small 4 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGrok 4.20 Multi-AgentMistral Small 4
Input-heavy / RAG5M input + 500K outputMistral Small 4$13$1.05
Balanced workload1M input + 1M outputMistral Small 4$8$0.75
Output-heavy chatbot1M input + 5M outputMistral Small 4$32$3.15
Cheaper input Mistral Small 4 $2 vs $0.15 / 1M

Mistral Small 4 is $1.85 cheaper per 1M input tokens (92.5% lower; 13.3x difference).

Cheaper output Mistral Small 4 $6 vs $0.6 / 1M

Mistral Small 4 is $5.4 cheaper per 1M output tokens (90% lower; 10x difference).

Larger context Grok 4.20 Multi-Agent 2M vs 262.14K

Grok 4.20 Multi-Agent has 1.74M more context (7.63x larger).

Sample workload Mistral Small 4 $5 vs $0.45

Mistral Small 4 is $4.55 cheaper on the standard workload (91% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Grok 4.20 Multi-Agent Calculating… Estimated API cost
Mistral Small 4 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

Mistral Small 4 has the lower input price; Mistral Small 4 has the lower output price; Grok 4.20 Multi-Agent offers the larger context window. For the 1M input plus 500K output sample, Mistral Small 4 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $5 for Grok 4.20 Multi-Agent and $0.45 for Mistral Small 4.

Best Fit

Choose Grok 4.20 Multi-Agent when you care most about larger context window.

Choose Mistral Small 4 when you care most about lower input-token price, and lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, Mistral Small 4 is estimated at $0.45 vs $5 for Grok 4.20 Multi-Agent, saving $4.55 (91% lower).
  • Mistral Small 4 is $4.55 cheaper on the standard workload (91% lower).
  • Mistral Small 4 is $1.85 cheaper per 1M input tokens (92.5% lower; 13.3x difference).
  • Mistral Small 4 is $5.4 cheaper per 1M output tokens (90% lower; 10x difference).
  • Grok 4.20 Multi-Agent has 1.74M more context (7.63x larger).
Head-to-Head Specs
FeatureGrok 4.20 Multi-Agent
(xAI)		Mistral Small 4
(Mistral)
Input Price
prompt tokens per 1M		$2$0.15
Completion Price
per 1M tokens		$6$0.6
Sample Workload Cost
1M input + 500K output		$5$0.45
Context Window2M262.14K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionMistral Small 4On the standard 1M input plus 500K output workload, Mistral Small 4 is estimated at $0.45 vs $5 for Grok 4.20 Multi-Agent, saving $4.55 (91% lower).
High-volume input processingMistral Small 4Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsMistral Small 4Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGrok 4.20 Multi-AgentA 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 Multi-Agent when lower sample workload cost matters most: $2.
  • Grok 4.3 can replace Grok 4.20 Multi-Agent when lower sample workload cost matters most: $2.5.
  • Grok 4.20 can replace Grok 4.20 Multi-Agent when lower sample workload cost matters most: $2.5.
  • Mistral Nemo can replace Mistral Small 4 when lower sample workload cost matters most: $0.04.
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.

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xAI catalog

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

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Mistral catalog

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

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Grok 4.20 Multi-Agent

Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information...

Mistral Small 4

Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from...