ULTRABENCH needs JavaScript for the interactive leaderboard

The data does not. Every number in this index is served as JSON from a public, key-free API — start at /v1/leaderboard for the ranked table, or /v1/snapshot for the whole published index, /v1/models, /v1/benchmarks, /v1/families and /v1/hardware for the individual collections.

LLM leaderboard

Name: ULTRABENCH LLM leaderboard
Creator: Iternal Technologies

The 25 highest-ranked models by intelligence index.

GPT-6 Astra · intelligence index 93.7 · $20.00 per 1M tokens blended · 1.1M context
Claude Opus 5.5 · intelligence index 92.5 · $8.00 per 1M tokens blended · 1M context
Claude Fable 5.1 · intelligence index 91.7 · $20.00 per 1M tokens blended · 1M context
Claude Fable 5 · intelligence index 91.2 · $20.00 per 1M tokens blended · 1M context
Claude Opus 5 · intelligence index 90.4 · $10.00 per 1M tokens blended · 1M context
GPT-5.6 Sol · intelligence index 90.0 · $4.00 per 1M tokens blended · 1.1M context
Gemini 3.8 Flash · intelligence index 89.3 · $1.50 per 1M tokens blended · 1M context
Fugu Ultra · intelligence index 88.0 · $11.25 per 1M tokens blended · 1M context
Muse Spark 1.3 Contributor · intelligence index 87.1 · $0.125 per 1M tokens blended · 1M context
Muse Spark 1.3 · intelligence index 87.0 · $2.00 per 1M tokens blended · 1M context
Claude Opus 4.8 · intelligence index 85.7 · $10.00 per 1M tokens blended · 1M context
Gemini 3.1 Pro · intelligence index 85.0 · $4.50 per 1M tokens blended · 1M context
GPT-5.5 · intelligence index 84.8 · $11.25 per 1M tokens blended · 1.1M context
Kimi K3 · intelligence index 84.4 · $4.21 per 1M tokens blended · 1M context
GPT-5.6 Terra · intelligence index 84.3 · $4.50 per 1M tokens blended · 1.1M context
GPT-5.4 Pro · intelligence index 84.1 · $67.50 per 1M tokens blended · 1.1M context
Grok 4.6 · intelligence index 83.8 · $3.00 per 1M tokens blended · 500K context
Qwen3.5 Plus 2026-04-20 · intelligence index 83.6 · $0.585 per 1M tokens blended · 1M context
GPT-5.5 Pro · intelligence index 83.5 · $67.50 per 1M tokens blended · 1.1M context
Muse Spark 1.2 · intelligence index 83.2 · $2.00 per 1M tokens blended · 1M context
GLM 5.3 · intelligence index 83.2 · $1.80 per 1M tokens blended · 1M context
Qwen3.8-Max · intelligence index 83.0 · $3.00 per 1M tokens blended · 1M context
Hy4 preview · intelligence index 82.9 · $1.25 per 1M tokens blended · 1M context
Qwen3.8-2.4T-A95B · intelligence index 82.7 · $3.00 per 1M tokens blended · 1M context
GPT-5.4 · intelligence index 81.8 · $5.63 per 1M tokens blended · 1.1M context