LLM Leaderboard: Best AI Models Ranked (April 2026)

There is no single best model in April 2026 — the leaderboard has fractured by task. Claude Opus 4.7 dominates coding benchmarks at 82% on SWE-bench Verified and ranks first on LM Arena with 1504 Elo rating. Three models tie at the top of the Artificial Analysis Intelligence Index (score of 57): Cla