Claude Sonnet 4 5 20250929 Thinking 32kvsGPT 5.6 Luna Xhigh

Claude Sonnet 4 5 20250929 Thinking 32k is tied with GPT 5.6 Luna Xhigh on the Podium Score (73.0).Category wins: Claude Sonnet 4 5 20250929 Thinking 32k 0 — 0 GPT 5.6 Luna Xhigh.GPT 5.6 Luna Xhigh is the cheaper pick ($10/M vs $15/M per 1M output tokens). Claude Sonnet 4 5 20250929 Thinking 32k is faster (50 t/s vs 50 t/s).

MetricClaude Sonnet 4 5 20250929 Thinking 32kGPT 5.6 Luna Xhigh
Podium Score73.073.0
Arena Elo
Intelligence Index
Coding
Math
Reasoning
Agentic
Knowledge
Multimodal
Long-context
Output speed50 t/s50 t/s
Output price$15/M$10/M ▲
Context window128K128K