APEX-Agents Original Effort: xHigh 65.3% mercor.com for Grok 4.6 (xhigh) on APEX-Agents Original (opens in a new tab) Archived copy (opens in a new tab) Pass rate Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on APEX-Agents Original BrowseComp 130-question subset — Mercor web research agent Effort: xHigh Configuration: Mercor web research agent, 100 steps, 3 hours 84.0% mercor.com for Grok 4.6 (xhigh) on BrowseComp 130-question subset — Mercor web research agent (opens in a new tab) Archived copy (opens in a new tab) BrowseComp Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on BrowseComp 130-question subset — Mercor web research agent Chartography October 2026 leaderboard Effort: xHigh 20.5% surgehq.ai for Grok 4.6 (xHigh) on Chartography October 2026 leaderboard (opens in a new tab) Archived copy (opens in a new tab) Chartography Pass@1 Reported October 7, 2026 Benchmark leaderboard Surge AI Independent Record for Grok 4.6 on Chartography October 2026 leaderboard CharXiv Descriptive and reasoning — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 92.9% mercor.com for Grok 4.6 (xhigh) on CharXiv Descriptive and reasoning — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) CharXiv Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on CharXiv Descriptive and reasoning — Mercor single-shot CursorBench 3.2.0 Effort: High 69.9% x.ai for Grok 4.6 (high) on CursorBench 3.2.0 (opens in a new tab) CursorBench Accuracy Reported August 12, 2026 Launch post SpaceXAI Self-reported Record for Grok 4.6 on CursorBench 3.2.0 CursorBench 4.0 Effort: Low 33.4% cursor.com for Grok 4.6 (low) on CursorBench 4.0 (opens in a new tab) Archived copy (opens in a new tab) CursorBench Accuracy Reported October 7, 2026 Benchmark leaderboard Cursor Independent Record for Grok 4.6 on CursorBench 4.0 CursorBench 4.0 Effort: Medium 36.1% cursor.com for Grok 4.6 (medium) on CursorBench 4.0 (opens in a new tab) Archived copy (opens in a new tab) CursorBench Accuracy Reported October 7, 2026 Benchmark leaderboard Cursor Independent Record for Grok 4.6 on CursorBench 4.0 CursorBench 4.0 Effort: High 40.4% cursor.com for Grok 4.6 (high) on CursorBench 4.0 (opens in a new tab) CursorBench Accuracy Reported September 21, 2026 Benchmark leaderboard Cursor Independent Record for Grok 4.6 on CursorBench 4.0 CursorBench 4.0 Effort: xHigh 41.4% cursor.com for Grok 4.6 (xhigh) on CursorBench 4.0 (opens in a new tab) Archived copy (opens in a new tab) CursorBench Accuracy Reported October 7, 2026 Benchmark leaderboard Cursor Independent Record for Grok 4.6 on CursorBench 4.0 CWE-bench 1 — OpenCode Effort: High Configuration: OpenCode harness 57.0% cwe-bench.com for Grok 4.6 (high) on CWE-bench 1 — OpenCode (opens in a new tab) Archived copy (opens in a new tab) CWE-bench Programmatic Pass@1 Reported October 7, 2026 Benchmark leaderboard Collinear AI Independent Record for Grok 4.6 on CWE-bench 1 — OpenCode CyberGym Original Effort: High 79.7% media.x.ai for Grok 4.6 (high) on CyberGym Original (opens in a new tab) Vulnerability reproduction success Reported August 17, 2026 Model card SpaceXAI Self-reported Record for Grok 4.6 on CyberGym Original DeepSWE 1.1 Effort: Medium 67.0% deepswe.datacurve.ai for Grok 4.6 (medium) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported September 22, 2026 Benchmark leaderboard Datacurve Independent Record for Grok 4.6 on DeepSWE 1.1 DeepSWE 1.1 Effort: High 65.9% x.ai for Grok 4.6 (high) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported August 12, 2026 Launch post SpaceXAI Self-reported Record for Grok 4.6 on DeepSWE 1.1 DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Effort: High Configuration: Mercor mini-swe-agent, 500 steps, 2 hours 63.7% mercor.com for Grok 4.6 (high) on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps (opens in a new tab) Archived copy (opens in a new tab) DeepSWE Pass@1 Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Effort: xHigh Configuration: Mercor mini-swe-agent, 500 steps, 2 hours 24.8% mercor.com for Grok 4.6 (xhigh) on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps (opens in a new tab) Archived copy (opens in a new tab) DeepSWE Pass@1 Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Finance Agent Benchmark 2 — October 2026 evaluation Effort: High 53.7% vals.ai for Grok 4.6 (high) on Finance Agent Benchmark 2 — October 2026 evaluation (opens in a new tab) Archived copy (opens in a new tab) Finance Agent Accuracy Reported October 6, 2026 Benchmark leaderboard Vals AI Independent Record for Grok 4.6 on Finance Agent Benchmark 2 — October 2026 evaluation FrontierSWE 2 — October 2026 evaluation Configuration: Proximus harness, 5 trials, 20-hour budget 25.3% frontierswe.com for Grok 4.6 on FrontierSWE 2 — October 2026 evaluation (opens in a new tab) Archived copy (opens in a new tab) FrontierSWE Score Reported October 7, 2026 Benchmark leaderboard Proximal Independent Record for Grok 4.6 on FrontierSWE 2 — October 2026 evaluation GPQA Diamond — Epoch AI harness Effort: High Configuration: Epoch AI harness 94.0% epoch.ai for Grok 4.6 (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 August 12, 2026 at 7:39 PM UTC Benchmark leaderboard Epoch AI Independent Record for Grok 4.6 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Epoch AI harness Effort: xHigh Configuration: Epoch AI harness 93.2% epoch.ai for Grok 4.6 (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 14, 2026 at 1:47 PM UTC Benchmark leaderboard Epoch AI Independent Record for Grok 4.6 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 93.8% mercor.com for Grok 4.6 (xhigh) on Graduate-Level Google-Proof Q&A Diamond — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) GPQA Diamond Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on Graduate-Level Google-Proof Q&A Diamond — Mercor single-shot GPQA Diamond — Vals AI harness Effort: High Configuration: Vals AI harness: mean of zero-shot and few-shot CoT 94.7% vals.ai for Grok 4.6 (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 Grok 4.6 on Graduate-Level Google-Proof Q&A Diamond — Vals AI harness HLAB October 2026 evaluation Effort: High 15.8% vals.ai for Grok 4.6 (high) on Harvey's Legal Agent Benchmark October 2026 evaluation (opens in a new tab) Archived copy (opens in a new tab) HLAB Task Pass Rate Reported October 6, 2026 Benchmark leaderboard Vals AI Independent Record for Grok 4.6 on Harvey's Legal Agent Benchmark October 2026 evaluation Humanity's Last Exam Text only — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 41.3% mercor.com for Grok 4.6 (xhigh) on Humanity's Last Exam Text only — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) Humanity's Last Exam Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on Humanity's Last Exam Text only — Mercor single-shot MedXpertQA MM — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 75.2% mercor.com for Grok 4.6 (xhigh) on MedXpertQA MM — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on MedXpertQA MM — Mercor single-shot MMLU-Pro Original — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 89.4% mercor.com for Grok 4.6 (xhigh) on MMLU-Pro Original — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on MMLU-Pro Original — Mercor single-shot MMLU-Pro Original — Vals AI harness Effort: High Configuration: Vals AI harness 89.4% vals.ai for Grok 4.6 (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 Grok 4.6 on MMLU-Pro Original — Vals AI harness MMMU-Pro 1,730 questions — Mercor single-shot Effort: xHigh Configuration: Mercor single-shot agent 80.5% mercor.com for Grok 4.6 (xhigh) on MMMU-Pro 1,730 questions — Mercor single-shot (opens in a new tab) Archived copy (opens in a new tab) MMMU-Pro accuracy Setting: Not stated Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on MMMU-Pro 1,730 questions — Mercor single-shot SimpleQA Verified Original — Epoch AI harness Effort: High Configuration: Epoch AI harness 49.3% epoch.ai for Grok 4.6 (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 27, 2026 at 7:29 PM UTC Benchmark leaderboard Epoch AI Independent Record for Grok 4.6 on SimpleQA Verified Original — Epoch AI harness SimpleQA Verified Original — Epoch AI harness Effort: xHigh Configuration: Epoch AI harness 48.9% epoch.ai for Grok 4.6 (xhigh) 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 27, 2026 at 7:29 PM UTC Benchmark leaderboard Epoch AI Independent Record for Grok 4.6 on SimpleQA Verified Original — Epoch AI harness SWE Atlas Codebase QnA — Mercor mini-swe-agent, 250 steps Effort: xHigh Configuration: Mercor mini-swe-agent, 250 steps, 1 hour 50.3% mercor.com for Grok 4.6 (xhigh) on SWE Atlas Codebase QnA — Mercor mini-swe-agent, 250 steps (opens in a new tab) Archived copy (opens in a new tab) Mean pass@1 Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on SWE Atlas Codebase QnA — Mercor mini-swe-agent, 250 steps SWE-bench Multilingual — Mercor mini-swe-agent, 1000 steps Effort: xHigh Configuration: Mercor mini-swe-agent, 1000 steps, 3 hours 92.7% mercor.com for Grok 4.6 (xhigh) on SWE-bench Multilingual — Mercor mini-swe-agent, 1000 steps (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on SWE-bench Multilingual — Mercor mini-swe-agent, 1000 steps SWE-bench Verified — Mercor mini-swe-agent, 1000 steps Effort: xHigh Configuration: Mercor mini-swe-agent, 1000 steps, 3 hours 84.6% mercor.com for Grok 4.6 (xhigh) on SWE-bench Verified — Mercor mini-swe-agent, 1000 steps (opens in a new tab) Archived copy (opens in a new tab) Resolved Tasks Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on SWE-bench Verified — Mercor mini-swe-agent, 1000 steps SWE-bench Verified — Vals AI mini-swe-agent Effort: High Configuration: mini-swe-agent harness 95.6% vals.ai for Grok 4.6 (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 Grok 4.6 on SWE-bench Verified — Vals AI mini-swe-agent Terminal-Bench 2.1 — Vals AI Terminus 2 Effort: High Configuration: Terminus-2 harness 78.3% vals.ai for Grok 4.6 (high) on Terminal-Bench 2.1 — Vals AI Terminus 2 (opens in a new tab) Archived copy (opens in a new tab) Terminal-Bench Accuracy Reported September 28, 2026 Benchmark leaderboard Vals AI Independent Record for Grok 4.6 on Terminal-Bench 2.1 — Vals AI Terminus 2 Terminal-Bench 4.0 — Grok Build Effort: High Configuration: Grok Build harness 20.3% tbench.ai for Grok 4.6 (high) on Terminal-Bench 4.0 — Grok Build (opens in a new tab) Archived copy (opens in a new tab) Terminal-Bench Accuracy Reported August 12, 2026 Benchmark leaderboard Terminal-Bench Independent Terminal-Bench Team Record for Grok 4.6 on Terminal-Bench 4.0 — Grok Build Terminal-Bench 4.0 — Mercor mini-swe-agent Effort: xHigh Configuration: Mercor mini-swe-agent, 1000 steps, 8 hours 25.3% mercor.com for Grok 4.6 (xhigh) on Terminal-Bench 4.0 — Mercor mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Terminal-Bench Accuracy Reported October 7, 2026 Benchmark leaderboard Mercor Independent Record for Grok 4.6 on Terminal-Bench 4.0 — Mercor mini-swe-agent Terminal-Bench 4.0 — Vals AI mini-swe-agent Effort: High Configuration: mini-swe-agent harness 17.2% vals.ai for Grok 4.6 (high) on Terminal-Bench 4.0 — Vals AI mini-swe-agent (opens in a new tab) Archived copy (opens in a new tab) Terminal-Bench Accuracy Reported October 6, 2026 Benchmark leaderboard Vals AI Independent Record for Grok 4.6 on Terminal-Bench 4.0 — Vals AI mini-swe-agent Vals Index 2.1 Effort: High 52.1% vals.ai for Grok 4.6 (high) on Vals Index 2.1 (opens in a new tab) Archived copy (opens in a new tab) Vals Index GDP-weighted Accuracy Reported October 6, 2026 Benchmark leaderboard Vals AI Independent Record for Grok 4.6 on Vals Index 2.1 Vibe Code Bench 1.1 — OpenHands, October 2026 evaluation Effort: High Configuration: OpenHands harness 76.2% vals.ai for Grok 4.6 (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 Grok 4.6 on Vibe Code Bench 1.1 — OpenHands, October 2026 evaluation