GPQA Diamond — Epoch AI harness Effort: Medium Configuration: Epoch AI harness 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 GPQA Diamond — Epoch AI harness Effort: High Configuration: Epoch AI harness 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 GPQA Diamond — Vals AI harness Effort: High Configuration: Vals AI harness: mean of zero-shot and few-shot CoT 80.3% vals.ai for GPT-5 mini (high) 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 GPT-5 mini on Graduate-Level Google-Proof Q&A Diamond — Vals AI harness Humanity's Last Exam Full set — Scale AI evaluation 19.4% labs.scale.com for GPT-5 mini 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 GPT-5 mini on Humanity's Last Exam Full set — Scale AI evaluation Humanity's Last Exam Text only — Scale AI evaluation 19.7% labs.scale.com for GPT-5 mini 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 GPT-5 mini on Humanity's Last Exam Text only — Scale AI evaluation MMLU-Pro Original — Vals AI harness Effort: High Configuration: Vals AI harness 82.2% vals.ai for GPT-5 mini (high) 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 GPT-5 mini on MMLU-Pro Original — Vals AI harness MMMU-Pro Vals AI harness Effort: High Configuration: Vals AI harness 78.9% vals.ai for GPT-5 mini (high) 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 GPT-5 mini on MMMU-Pro Vals AI harness SimpleQA Verified Original — Epoch AI harness Effort: High Configuration: Epoch AI harness 21.6% epoch.ai for GPT-5 mini (high) on SimpleQA Verified Original — Epoch AI harness (opens in a new tab) Archived copy (opens in a new tab) Accuracy Reported October 7, 2026 Evaluated August 10, 2026 at 9:35 PM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 mini on SimpleQA Verified Original — Epoch AI harness SWE-bench Multilingual — mini-swe-agent Configuration: mini-swe-agent harness 39.7% github.com for GPT-5 mini on SWE-bench Multilingual — mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported February 13, 2026 Benchmark repository SWE-bench Independent SWE-bench Team Record for GPT-5 mini on SWE-bench Multilingual — mini-swe-agent SWE-bench Verified — Epoch AI harness Effort: Medium Configuration: Epoch AI harness 64.7% epoch.ai for GPT-5 mini (medium) 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 1, 2026 at 11:28 AM UTC Benchmark leaderboard Epoch AI Independent Record for GPT-5 mini on SWE-bench Verified — Epoch AI harness SWE-bench Verified — mini-swe-agent Effort: Medium Configuration: mini-swe-agent harness 59.8% github.com for GPT-5 mini (medium) on SWE-bench Verified — mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported August 7, 2025 Benchmark repository SWE-bench Independent SWE-bench Team Record for GPT-5 mini on SWE-bench Verified — mini-swe-agent SWE-bench Verified — mini-swe-agent Configuration: mini-swe-agent harness 56.2% github.com for GPT-5 mini on SWE-bench Verified — mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported February 17, 2026 Benchmark repository SWE-bench Independent SWE-bench Team Record for GPT-5 mini on SWE-bench Verified — mini-swe-agent SWE-bench Verified — Vals AI mini-swe-agent Effort: High Configuration: mini-swe-agent harness 60.8% vals.ai for GPT-5 mini (high) on SWE-bench Verified — Vals AI mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported September 1, 2026 Benchmark leaderboard Vals AI Independent Record for GPT-5 mini on SWE-bench Verified — Vals AI mini-swe-agent Terminal-Bench 2.0 — Vals AI Terminus 2 Effort: High Configuration: Terminus-2 harness 27.0% vals.ai for GPT-5 mini (high) on Terminal-Bench 2.0 — Vals AI Terminus 2 (opens in a new tab) Archived copy (opens in a new tab) Terminal-Bench Accuracy Reported June 4, 2026 Benchmark leaderboard Vals AI Independent Record for GPT-5 mini on Terminal-Bench 2.0 — Vals AI Terminus 2 Toolathlon Original 14.5% toolathlon.xyz for GPT-5 mini on Toolathlon Original (opens in a new tab) Archived copy (opens in a new tab) Tasks completed Reported October 28, 2025 Benchmark leaderboard Toolathlon Independent Toolathlon Authors Record for GPT-5 mini on Toolathlon Original Vibe Code Bench 1.1 — OpenHands, October 2026 evaluation Effort: High Configuration: OpenHands harness 14.2% vals.ai for GPT-5 mini (high) on Vibe Code Bench 1.1 — OpenHands, October 2026 evaluation (opens in a new tab) Archived copy (opens in a new tab) Vibe Code Bench Score Reported October 6, 2026 Benchmark leaderboard Vals AI Independent Record for GPT-5 mini on Vibe Code Bench 1.1 — OpenHands, October 2026 evaluation