modelgrep

Anthropic: Claude Fable 5 vs OpenAI: GPT-5.2

anthropic logoAnthropic: Claude Fable 5anthropic/claude-fable-5VSopenai logoOpenAI: GPT-5.2openai/gpt-5.2

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

MetricAnthropic: Claude Fable 5OpenAI: GPT-5.2
Intelligence Index59.9✓42.2
Coding Index76.5✓—
GPQA Diamond93%✓90%
Design Arena Elo1381✓—
Speed (tokens/sec)5457✓
Latency4.2s711ms✓
Input price /M$10.00$1.75✓
Output price /M$50.00$14.00✓
Context window1M✓400K
CapabilitiesReasoningToolsJSONVisionReasoningToolsJSONVision
Anthropic: Claude Fable 5 details →OpenAI: GPT-5.2 details →