OpenAI GPT-4.5 Preview 68.7% epoch.ai for GPT-4.5 Preview 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 February 28, 2025 at 9:17 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-4.5 Preview on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10001 OpenAI GPT-4.1 66.9% epoch.ai for GPT-4.1 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 April 14, 2025 at 6:34 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-4.1 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10002 OpenAI OpenAI o3 (low)79.8% epoch.ai for OpenAI o3 (low) 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 July 15, 2026 at 3:15 AM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o3 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10003 OpenAI OpenAI o3 (high)81.8% epoch.ai for OpenAI o3 (high) 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 April 16, 2025 at 6:17 PM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o3 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10003 OpenAI OpenAI o3 (medium)80.8% epoch.ai for OpenAI o3 (medium) 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 August 7, 2026 at 12:42 AM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o3 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10003 OpenAI OpenAI o4-mini (medium)77.8% epoch.ai for OpenAI o4-mini (medium) 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 August 7, 2026 at 12:24 AM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o4-mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10004 OpenAI OpenAI o4-mini (high)79.6% epoch.ai for OpenAI o4-mini (high) 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 April 16, 2025 at 6:17 PM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o4-mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10004 OpenAI OpenAI o4-mini (low)75.3% epoch.ai for OpenAI o4-mini (low) 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 July 11, 2026 at 8:04 AM UTC Benchmark leaderboard Epoch AI Independent Record for OpenAI o4-mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10004 OpenAI GPT-6 Astra (max)95.8% epoch.ai for GPT-6 Astra (max) 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 August 30, 2026 at 2:57 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-6 Astra on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10005 OpenAI GPT-5.4 (medium)88.9% epoch.ai for GPT-5.4 (medium) 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 July 15, 2026 at 3:14 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10007 OpenAI GPT-5.4 (none)74.7% epoch.ai for GPT-5.4 (none) 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 July 15, 2026 at 3:14 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10007 OpenAI GPT-5.4 (high)89.9% epoch.ai for GPT-5.4 (high) 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 July 15, 2026 at 3:14 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10007 OpenAI GPT-5.4 (low)84.8% epoch.ai for GPT-5.4 (low) 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 July 15, 2026 at 3:14 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10007 OpenAI GPT-5.4 (xhigh)93.3% epoch.ai for GPT-5.4 (xhigh) 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 March 6, 2026 at 2:57 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10007 OpenAI GPT-5.5 (none)77.3% epoch.ai for GPT-5.5 (none) 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 August 7, 2026 at 12:57 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10008 OpenAI GPT-5.5 (low)90.7% epoch.ai for GPT-5.5 (low) 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 5, 2026 at 6:00 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10008 OpenAI GPT-5.6 Luna (max)91.6% epoch.ai for GPT-5.6 Luna (max) 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 July 9, 2026 at 1:36 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Luna on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10009 OpenAI GPT-5.6 Luna (low)82.3% epoch.ai for GPT-5.6 Luna (low) 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 August 7, 2026 at 12:08 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Luna on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10009 OpenAI GPT-5.6 Luna (none)63.6% epoch.ai for GPT-5.6 Luna (none) 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 August 7, 2026 at 12:35 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Luna on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10009 OpenAI GPT-5.6 Sol (low)89.9% epoch.ai for GPT-5.6 Sol (low) 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 August 7, 2026 at 12:46 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Sol on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10010 OpenAI GPT-5.6 Sol (max)93.5% epoch.ai for GPT-5.6 Sol (max) 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 July 9, 2026 at 2:07 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Sol on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10010 OpenAI GPT-5.6 Sol (none)82.8% epoch.ai for GPT-5.6 Sol (none) 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 August 7, 2026 at 1:00 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Sol on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10010 OpenAI GPT-5.6 Terra (none)77.3% epoch.ai for GPT-5.6 Terra (none) 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 August 7, 2026 at 12:50 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Terra on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10011 OpenAI GPT-5.6 Terra (low)87.4% epoch.ai for GPT-5.6 Terra (low) 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 August 7, 2026 at 12:35 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Terra on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10011 OpenAI GPT-5.6 Terra (max)93.3% epoch.ai for GPT-5.6 Terra (max) 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 July 9, 2026 at 5:07 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.6 Terra on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10011 OpenAI GPT-5.2 (high)88.2% epoch.ai for GPT-5.2 (high) 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 December 11, 2025 at 8:49 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.2 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10012 OpenAI GPT-5.2 (low)82.7% epoch.ai for GPT-5.2 (low) 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 December 11, 2025 at 8:25 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.2 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10012 OpenAI GPT-5.2 (medium)87.9% epoch.ai for GPT-5.2 (medium) 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 December 11, 2025 at 8:49 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.2 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10012 OpenAI GPT-5.2 (none)73.2% epoch.ai for GPT-5.2 (none) 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 July 13, 2026 at 5:28 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.2 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10012 OpenAI GPT-5.2 (xhigh)91.4% epoch.ai for GPT-5.2 (xhigh) 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 December 13, 2025 at 9:04 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.2 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10012 OpenAI GPT-6 Luna (max)90.5% epoch.ai for GPT-6 Luna (max) 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 September 22, 2026 at 10:14 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-6 Luna on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10013 OpenAI GPT-6 Sol (max)94.3% epoch.ai for GPT-6 Sol (max) 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 September 22, 2026 at 7:59 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-6 Sol on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10014 OpenAI GPT-6.1 Sol (max)95.4% epoch.ai for GPT-6.1 Sol (max) 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 September 29, 2026 at 10:00 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-6.1 Sol on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10015 OpenAI GPT-4.1 mini 65.8% epoch.ai for GPT-4.1 mini 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 April 14, 2025 at 10:49 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-4.1 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10016 OpenAI GPT-4.1 nano 48.9% epoch.ai for GPT-4.1 nano 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 April 14, 2025 at 10:49 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-4.1 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10017 OpenAI GPT-5 (high)86.2% epoch.ai for GPT-5 (high) 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 October 29, 2025 at 10:29 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10018 OpenAI GPT-5 (medium)85.4% epoch.ai for GPT-5 (medium) 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 August 7, 2025 at 7:34 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10018 OpenAI GPT-5 mini (medium)71.7% epoch.ai for GPT-5 mini (medium) 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 August 7, 2025 at 7:34 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10019 OpenAI GPT-5 mini (high)75.0% epoch.ai for GPT-5 mini (high) 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 October 30, 2025 at 9:59 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10019 OpenAI GPT-5 nano (low)57.6% epoch.ai for GPT-5 nano (low) 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 July 13, 2026 at 5:28 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10020 OpenAI GPT-5 nano (medium)67.4% epoch.ai for GPT-5 nano (medium) 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 August 7, 2025 at 7:34 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10020 OpenAI GPT-5 nano (high)69.4% epoch.ai for GPT-5 nano (high) 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 October 30, 2025 at 4:20 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10020 OpenAI GPT-5.4 mini (xhigh)86.9% epoch.ai for GPT-5.4 mini (xhigh) 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 August 7, 2026 at 1:00 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10021 OpenAI GPT-5.4 mini (none)64.1% epoch.ai for GPT-5.4 mini (none) 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 August 7, 2026 at 12:46 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10021 OpenAI GPT-5.4 mini (high)83.6% epoch.ai for GPT-5.4 mini (high) 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 April 15, 2026 at 2:03 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 mini on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10021 OpenAI GPT-5.4 nano (low)72.2% epoch.ai for GPT-5.4 nano (low) 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 August 7, 2026 at 12:00 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10022 OpenAI GPT-5.4 nano (none)55.6% epoch.ai for GPT-5.4 nano (none) 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 August 7, 2026 at 12:01 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10022 OpenAI GPT-5.4 nano (high)78.5% epoch.ai for GPT-5.4 nano (high) 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 April 14, 2026 at 3:07 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5.4 nano on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 10022 DeepSeek AI DeepSeek-V4-Pro (max)89.6% epoch.ai for DeepSeek-V4-Pro (max) 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 June 16, 2026 at 8:16 PM UTC Benchmark leaderboard Epoch AI Independent Record for DeepSeek-V4-Pro on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 110002 DeepSeek AI DeepSeek-V4-Pro (none)73.2% epoch.ai for DeepSeek-V4-Pro (none) 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 August 6, 2026 at 11:58 PM UTC Benchmark leaderboard Epoch AI Independent Record for DeepSeek-V4-Pro on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness 110002