LLM Comparison

Claude Opus 4.6 vs GPT-5.4 Mini

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

Price vs Intelligence

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2/6 models

Same tier:

	Claude Opus 4.6	GPT-5.4 Mini
Organization	Anthropic	OpenAI
OpenTools Score	63 4.2	46 17.6
Family	Claude	GPT
Status	Current	Current
Release Date	Feb 2026	Mar 2026
Context Window	1.0M tokens	400K tokens
Input Price	$5.00/M tokens	$0.75/M tokens
Output Price	$25.00/M tokens	$4.50/M tokens
Pricing Notes	Cache read: $0.5000/M tokens	Cache read: $0.0750/M tokens
Capabilities	textvisioncodetool-use	textvisioncode
Max Output	128K tokens	128K tokens
API Identifier	`anthropic/claude-opus-4.6`	`openai/gpt-5.4-mini`
Benchmarks
MMLU	89.8anthropic	—
GPQA Diamond	91.3anthropic	88openai
SWE-bench Verified	80.8anthropic	—
SWE-bench Pro	53.4anthropic	54.4openai
Terminal-Bench 2.0	65.4anthropic	60openai
MATH 500	80.7anthropic	—
LiveCodeBench	55.9anthropic	—
Berkeley Function Calling	91.9anthropic	—
HLE	48anthropic	—
MCP-Atlas	75.8anthropic	—
BrowseComp	83.7anthropic	—
OSWorld-Verified	72.7anthropic	72.1openai
DocVQA	91.3anthropic	—
GPQA-AA Elo	1619artificial-analysis	—
MMMU-Pro	—	76.6openai
	View Claude Opus 4.6	View GPT-5.4 Mini

Cost Calculator

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Input tokens / month

Output tokens / month

Model	Input	Output	Total / mo	vs Best
GPT-5.4 MiniCheapest	$0.75	$2.25	$3.00	—
Claude Opus 4.6	$5.00	$12.50	$17.50	+483%

Anthropic

Claude Opus 4.6

Claude Opus 4.6 is a multimodal LLM from Anthropic with adaptive reasoning capabilities. Achieves 91.3% on GPQA Diamond and 80.8% on SWE-bench Verified. Supports up to 1,000,000 token context window. Available from $5.00/M input tokens.

OpenAI

GPT-5.4 Mini

GPT-5.4 Mini is a multimodal llm from OpenAI. Supports up to 400,000 token context window. Available from $0.75/M input tokens.