LLM Comparison

GPT-5.4 Pro vs Grok 4.20 Multi-Agent

Side-by-side specs, pricing & capabilities · Updated October 2026

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2/6 models
Same tier:
 OpenAIGPT-5.4 ProxAIGrok 4.20 Multi-Agent
OrganizationOpenAIOpenAIxAIxAI
OpenTools Score
82
0.8
FamilyGPTGrok
StatusCurrentCurrent
Release DateMar 2026Mar 2026
Context Window1.1M tokens2.0M tokens
Input Price$30.00/M tokens$2.00/M tokens
Output Price$180.00/M tokens$6.00/M tokens
Pricing NotesOpenAI's GPT-5.4 Pro model page lists $30 input and $180 output per 1M tokens. Prompts over 272K input tokens cost 2x input and 1.5x output for the full session (standard, batch and flex). Regional processing adds 10%.Cache read: $0.2000/M tokens
Capabilities
textvisioncode
textvisioncode
Training CutoffAug 31, 2025—
Max Output128K tokens—
API Identifieropenai/gpt-5.4-prox-ai/grok-4.20-multi-agent
Benchmarks
GPQA Diamond
93openai
—
SWE-bench Pro
57.7openai
—
MATH-500
94.6openai
—
 View GPT-5.4 ProView Grok 4.20 Multi-Agent

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Grok 4.20 Multi-AgentCheapest$2.00$3.00$5.00—
GPT-5.4 Pro$30.00$90.00$120.00+2300%

OpenAI

GPT-5.4 Pro

GPT-5.4 Pro is a multimodal llm from OpenAI. Supports up to 1,050,000 token context window. Available from $30.00/M input tokens.

xAI

Grok 4.20 Multi-Agent

Grok 4.20 Multi-Agent is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $2.00/M input tokens.

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