LLM Comparison

GPT-5.4 Mini vs Claude Opus 4.6 (Fast)

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

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2/6 models
Same tier:
 OpenAIGPT-5.4 MiniAnthropicClaude Opus 4.6 (Fast)
OrganizationOpenAIOpenAIAnthropicAnthropic
OpenTools Score
73
0.8
FamilyGPTClaude
StatusCurrentCurrent
Release DateMar 2026Apr 2026
Context Window400K tokens1.0M tokens
Input Price$0.75/M tokens$30.00/M tokens
Output Price$4.50/M tokens$150.00/M tokens
Pricing NotesCache read: $0.0750/M tokensCache read: $3.0000/M tokens
Capabilities
textvisioncode
textvisioncodetool-use
Max Output128K tokens128K tokens
API Identifieropenai/gpt-5.4-minianthropic/claude-opus-4.6-fast
Benchmarks
MMLU—89.8
HumanEval—91.5
MATH—84.9
GPQA—72.4
 View GPT-5.4 MiniView Claude Opus 4.6 (Fast)

Cost Calculator

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ModelInputOutputTotal / movs Best
GPT-5.4 MiniCheapest$0.75$2.25$3.00—
Claude Opus 4.6 (Fast)$30.00$75.00$105.00+3400%

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.

Anthropic

Claude Opus 4.6 (Fast)

Claude Opus 4.6 (Fast) is a multimodal llm from Anthropic. Supports up to 1,000,000 token context window. Achieves 89.8% on MMLU. Available from $30.00/M input tokens.

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