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Grok 4.20 Multi-Agent vs GPT-4o-mini

Detailed technical comparison between Grok 4.20 Multi-Agent (xAI) and GPT-4o-mini (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

Grok 4.20 Multi-Agent: 1 WinvsGPT-4o-mini: 5 Wins
Context Leader

Grok 4.20 Multi-Agent

2,000,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-4o-mini

$0.15 / MTok
xAIactive

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...

View Grok 4.20 Multi-Agent Full Specs →
OpenAIactive

GPT-4o-mini

GPT-4o mini is OpenAI's newest model after [GPT-4 Omni](/models/openai/gpt-4o), supporting both text and image inputs with text outputs. As their most advanced small model, it is many multiples more affordable...

View GPT-4o-mini Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGrok 4.20 Multi-AgentGPT-4o-mini
ProviderxAIOpenAI
Context Window2,000,000 tokens🏆128,000 tokens
Agent SuitabilityN/A82/100
Time to First Token (TTFT)N/A150 ms
Deployment Modelmanaged apimanaged api
Production Stabilitybetastable
API AvailableYesYes
Released Date2026-03-312024-07-18

API Pricing Comparison

Input Price per Million Tokens

Grok 4.20 Multi-Agent

$1.25

GPT-4o-mini

$0.15

Output Price per Million Tokens

Grok 4.20 Multi-Agent

$2.50

GPT-4o-mini

$0.60

💡 Cost Ratio: GPT-4o-mini is 8.3x cheaper per input token than Grok 4.20 Multi-Agent.

Want to test both models live?

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
80.8%vs82.0%+1.2% GPT-4o-mini
Grok 4.20 Multi-Agent
GPT-4o-mini 🏆
HumanEvalPython coding & logic synthesis
79.0%vs84.0%+5.0% GPT-4o-mini
Grok 4.20 Multi-Agent
GPT-4o-mini 🏆
MATHComplex mathematical problem solving
56.2%vs70.2%+14.0% GPT-4o-mini
Grok 4.20 Multi-Agent
GPT-4o-mini 🏆
GPQAGraduate-level expert reasoning
41.6%vs45.0%+3.4% GPT-4o-mini
Grok 4.20 Multi-Agent
GPT-4o-mini 🏆
HellaSwagCommonsense reasoning and inference
80.4%vs84.7%+4.3% GPT-4o-mini
Grok 4.20 Multi-Agent
GPT-4o-mini 🏆
MT-BenchMulti-turn conversation flow quality
8.6%vs8.6%+0.0% Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent 🏆
GPT-4o-mini

Grok 4.20 Multi-Agent Quirks & Gotchas

No developer gotchas reported.

GPT-4o-mini Quirks & Gotchas

  • ▸Ultra-low latency — best TTFT in the OpenAI lineup
  • ▸Tool calling limited to single-step — not suitable for complex agentic pipelines

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