LLM Comparison

Sonar Pro vs GPT-5.4 Pro

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

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2/6 models

Same tier:

	S Sonar Pro	GPT-5.4 Pro
Organization	Perplexity AI	OpenAI
OpenTools Score
Family	Sonar	GPT
Status	Current	Current
Release Date	Mar 2025	Mar 2026
Context Window	200K tokens	1.1M tokens
Input Price	$3.00/M tokens	$30.00/M tokens
Output Price	$15.00/M tokens	$180.00/M tokens
Capabilities	textvisioncode	textvisioncode
Max Output	8K tokens	128K tokens
API Identifier	`perplexity/sonar-pro`	`openai/gpt-5.4-pro`
Benchmarks
MMLU	83	—
	View Sonar Pro	View GPT-5.4 Pro

Cost Calculator

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Input tokens / month

Output tokens / month

Model	Input	Output	Total / mo	vs Best
Sonar ProCheapest	$3.00	$7.50	$10.50	—
GPT-5.4 Pro	$30.00	$90.00	$120.00	+1043%

Perplexity AI

Sonar Pro

Sonar Pro is a multimodal llm from Perplexity AI. Supports up to 200,000 token context window. Achieves 83.0% on MMLU. Available from $3.00/M input tokens.

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.