GPT-4o

Capabilities

• ▸realtime voice
• ▸vision
• ▸tool use

Use cases

voice assistants · multimodal apps

Lineage

GPT-4o head-to-head comparisons

• Claude 3.7 Sonnet vs GPT-4o
  Claude 3.7 Sonnet adds an optional extended-thinking mode and a larger context window; GPT-4o is natively multimodal with audio input.
• GPT-4.1 vs GPT-4o
  GPT-4.1 is API-only and tuned for coding and long documents with a ~1M context; GPT-4o powers ChatGPT with voice and audio.
• GPT-5 vs GPT-4o
  GPT-5 vs GPT-4o: OpenAI's unified reasoning model against the fast multimodal model it replaced as ChatGPT's default.
• GPT-4o vs Claude 3.5 Sonnet
  The two workhorse assistant models of 2024: GPT-4o is faster and natively multimodal, Claude 3.5 Sonnet writes and codes with more care over longer context.
• Claude Sonnet 4.5 vs GPT-4o
  A 2025 coding-focused model against the 2024 fast multimodal workhorse: Sonnet 4.5 is far stronger on software work, GPT-4o is cheaper and quicker for everyday chat.

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Sources & verification

Information is compiled from official announcements, documentation and reputable industry coverage.
Last verified Sep 10, 2026