GPQA Diamond Effort: None Reported as: standard (no extended thinking) 74.9% anthropic.com for Claude Opus 4 (standard (no extended thinking)) on Graduate-Level Google-Proof Q&A Diamond (opens in a new tab) GPQA Diamond Accuracy Reported May 22, 2025 Launch post Anthropic Self-reported Record for Claude Opus 4 on Graduate-Level Google-Proof Q&A Diamond GPQA Diamond — Epoch AI harness Configuration: Epoch AI harness 69.2% epoch.ai for Claude Opus 4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness (opens in a new tab) Archived copy (opens in a new tab) GPQA Diamond Accuracy Reported October 7, 2026 Evaluated May 22, 2025 at 5:26 PM UTC Benchmark leaderboard Epoch AI Independent Record for Claude Opus 4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Vals AI harness Configuration: Vals AI harness: mean of zero-shot and few-shot CoT 71.7% vals.ai for Claude Opus 4 on Graduate-Level Google-Proof Q&A Diamond — Vals AI harness (opens in a new tab) Archived copy (opens in a new tab) GPQA Diamond Accuracy Reported September 1, 2026 Benchmark leaderboard Vals AI Independent Record for Claude Opus 4 on Graduate-Level Google-Proof Q&A Diamond — Vals AI harness Humanity's Last Exam Full set — Scale AI evaluation 6.7% labs.scale.com for Claude Opus 4 on Humanity's Last Exam Full set — Scale AI evaluation (opens in a new tab) Archived copy (opens in a new tab) Humanity's Last Exam Accuracy Reported October 3, 2026 Benchmark leaderboard Scale AI Independent Record for Claude Opus 4 on Humanity's Last Exam Full set — Scale AI evaluation Humanity's Last Exam Full set — Scale AI evaluation Reported as: Thinking 10.7% labs.scale.com for Claude Opus 4 (Thinking) on Humanity's Last Exam Full set — Scale AI evaluation (opens in a new tab) Archived copy (opens in a new tab) Humanity's Last Exam Accuracy Reported October 3, 2026 Benchmark leaderboard Scale AI Independent Record for Claude Opus 4 on Humanity's Last Exam Full set — Scale AI evaluation Humanity's Last Exam Text only — Scale AI evaluation 6.3% labs.scale.com for Claude Opus 4 on Humanity's Last Exam Text only — Scale AI evaluation (opens in a new tab) Archived copy (opens in a new tab) Humanity's Last Exam Accuracy Reported October 7, 2026 Benchmark leaderboard Scale AI Independent Record for Claude Opus 4 on Humanity's Last Exam Text only — Scale AI evaluation Humanity's Last Exam Text only — Scale AI evaluation Reported as: Thinking 10.8% labs.scale.com for Claude Opus 4 (Thinking) on Humanity's Last Exam Text only — Scale AI evaluation (opens in a new tab) Archived copy (opens in a new tab) Humanity's Last Exam Accuracy Reported October 7, 2026 Benchmark leaderboard Scale AI Independent Record for Claude Opus 4 on Humanity's Last Exam Text only — Scale AI evaluation MMMU Effort: None Reported as: standard (no extended thinking) 73.7% anthropic.com for Claude Opus 4 (standard (no extended thinking)) on Massive Multi-discipline Multimodal Understanding MMMU (opens in a new tab) MMMU Accuracy Reported May 22, 2025 Launch post Anthropic Self-reported Record for Claude Opus 4 on Massive Multi-discipline Multimodal Understanding MMMU MMLU-Pro Original — Vals AI harness Configuration: Vals AI harness 86.2% vals.ai for Claude Opus 4 on MMLU-Pro Original — Vals AI harness (opens in a new tab) Archived copy (opens in a new tab) Accuracy Reported September 1, 2026 Benchmark leaderboard Vals AI Independent Record for Claude Opus 4 on MMLU-Pro Original — Vals AI harness MMMU-Pro Vals AI harness Configuration: Vals AI harness 73.3% vals.ai for Claude Opus 4 on MMMU-Pro Vals AI harness (opens in a new tab) Archived copy (opens in a new tab) MMMU-Pro accuracy Setting: Standard (4 options) Reported September 1, 2026 Benchmark leaderboard Vals AI Independent Record for Claude Opus 4 on MMMU-Pro Vals AI harness SWE-bench Verified Effort: None Reported as: standard (no extended thinking) 72.5% anthropic.com for Claude Opus 4 (standard (no extended thinking)) on SWE-bench Verified (opens in a new tab) Resolved Tasks Reported May 22, 2025 Launch post Anthropic Self-reported Record for Claude Opus 4 on SWE-bench Verified SWE-bench Verified — Epoch AI harness Configuration: Epoch AI harness 70.7% epoch.ai for Claude Opus 4 on SWE-bench Verified — Epoch AI harness (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported October 7, 2026 Evaluated February 6, 2026 at 7:21 AM UTC Benchmark leaderboard Epoch AI Independent Record for Claude Opus 4 on SWE-bench Verified — Epoch AI harness SWE-bench Verified — mini-swe-agent Configuration: mini-swe-agent harness 67.6% github.com for Claude Opus 4 on SWE-bench Verified — mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported August 2, 2025 Benchmark repository SWE-bench Independent SWE-bench Team Record for Claude Opus 4 on SWE-bench Verified — mini-swe-agent