modelgrep

Anthropic: Claude Sonnet 5 vs OpenAI: GPT-5.4

anthropic logoAnthropic: Claude Sonnet 5anthropic/claude-sonnet-5VSopenai logoOpenAI: GPT-5.4openai/gpt-5.4

Anthropic: Claude Sonnet 5 wins on more metrics (6 of 9), but the right pick depends on what you optimize for — see the breakdown below.

MetricAnthropic: Claude Sonnet 5OpenAI: GPT-5.4
Intelligence Index53.4✓51.4
Coding Index71.5✓71.1
GPQA Diamond91%92%✓
Design Arena Elo1330✓1241
Speed (tokens/sec)73✓60
Latency2.5s756ms✓
Input price /M$2.00✓$2.50
Output price /M$10.00✓$15.00
Context window1M1.1M✓
CapabilitiesReasoningToolsJSONVisionReasoningToolsJSONVision
Anthropic: Claude Sonnet 5 details →OpenAI: GPT-5.4 details →