APEX-Agents Original Effort: Max 65.8% mercor.com for Claude Opus 5 (max) 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 Claude Opus 5 on APEX-Agents Original AutomationBench 1.0.6 Effort: Low 20.4% zapier.com for Claude Opus 5 (low) on AutomationBench 1.0.6 (opens in a new tab) Archived copy (opens in a new tab) Task pass rate Reported October 7, 2026 Benchmark leaderboard Zapier Independent Zapier AutomationBench Team Record for Claude Opus 5 on AutomationBench 1.0.6 AutomationBench 1.0.6 Effort: Medium 23.9% zapier.com for Claude Opus 5 (medium) on AutomationBench 1.0.6 (opens in a new tab) Archived copy (opens in a new tab) Task pass rate Reported October 7, 2026 Benchmark leaderboard Zapier Independent Zapier AutomationBench Team Record for Claude Opus 5 on AutomationBench 1.0.6 AutomationBench 1.0.6 Effort: High 20.6% zapier.com for Claude Opus 5 (high) on AutomationBench 1.0.6 (opens in a new tab) Archived copy (opens in a new tab) Task pass rate Reported October 7, 2026 Benchmark leaderboard Zapier Independent Zapier AutomationBench Team Record for Claude Opus 5 on AutomationBench 1.0.6 AutomationBench 1.0.6 Effort: xHigh 25.3% zapier.com for Claude Opus 5 (xhigh) on AutomationBench 1.0.6 (opens in a new tab) Archived copy (opens in a new tab) Task pass rate Reported October 7, 2026 Benchmark leaderboard Zapier Independent Zapier AutomationBench Team Record for Claude Opus 5 on AutomationBench 1.0.6 AutomationBench 1.0.6 Effort: Max 26.9% zapier.com for Claude Opus 5 (max) on AutomationBench 1.0.6 (opens in a new tab) Archived copy (opens in a new tab) Task pass rate Reported October 7, 2026 Benchmark leaderboard Zapier Independent Zapier AutomationBench Team Record for Claude Opus 5 on AutomationBench 1.0.6 BrowseComp 130-question subset — Mercor web research agent Effort: Max Configuration: Mercor web research agent, 100 steps, 3 hours 84.6% mercor.com for Claude Opus 5 (max) 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 Claude Opus 5 on BrowseComp 130-question subset — Mercor web research agent BrowseComp Effort: Low 84.4% www-cdn.anthropic.com for Claude Opus 5 (low) on BrowseComp BrowseComp (opens in a new tab) BrowseComp Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on BrowseComp BrowseComp BrowseComp Effort: Medium 88.9% www-cdn.anthropic.com for Claude Opus 5 (medium) on BrowseComp BrowseComp (opens in a new tab) BrowseComp Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on BrowseComp BrowseComp BrowseComp Effort: High 90.2% www-cdn.anthropic.com for Claude Opus 5 (high) on BrowseComp BrowseComp (opens in a new tab) BrowseComp Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on BrowseComp BrowseComp BrowseComp Effort: xHigh 90.7% www-cdn.anthropic.com for Claude Opus 5 (xhigh) on BrowseComp BrowseComp (opens in a new tab) BrowseComp Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on BrowseComp BrowseComp BrowseComp Effort: Max 90.8% www-cdn.anthropic.com for Claude Opus 5 (max) on BrowseComp BrowseComp (opens in a new tab) BrowseComp Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on BrowseComp BrowseComp Chartography October 2026 leaderboard Effort: Max Reported as: Adaptive/Max 27.3% surgehq.ai for Claude Opus 5 (Adaptive/Max) 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 Claude Opus 5 on Chartography October 2026 leaderboard CharXiv Descriptive and reasoning — Mercor single-shot Effort: Max Configuration: Mercor single-shot agent 94.6% mercor.com for Claude Opus 5 (max) 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 Claude Opus 5 on CharXiv Descriptive and reasoning — Mercor single-shot CursorBench 4.0 Effort: Low 40.7% cursor.com for Claude Opus 5 (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 Claude Opus 5 on CursorBench 4.0 CursorBench 4.0 Effort: Medium 43.3% cursor.com for Claude Opus 5 (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 Claude Opus 5 on CursorBench 4.0 CursorBench 4.0 Effort: High 44.7% cursor.com for Claude Opus 5 (high) 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 Claude Opus 5 on CursorBench 4.0 CursorBench 4.0 Effort: xHigh 46.1% cursor.com for Claude Opus 5 (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 Claude Opus 5 on CursorBench 4.0 CursorBench 4.0 Effort: Max 46.6% cursor.com for Claude Opus 5 (max) on CursorBench 4.0 (opens in a new tab) CursorBench Accuracy Reported September 10, 2026 Benchmark leaderboard Cursor Independent Record for Claude Opus 5 on CursorBench 4.0 DeepSearchQA 900-prompt set Effort: Low 91.0% www-cdn.anthropic.com for Claude Opus 5 (low) on DeepSearchQA 900-prompt set (opens in a new tab) F1 score Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSearchQA 900-prompt set DeepSearchQA 900-prompt set Effort: Medium 92.8% www-cdn.anthropic.com for Claude Opus 5 (medium) on DeepSearchQA 900-prompt set (opens in a new tab) F1 score Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSearchQA 900-prompt set DeepSearchQA 900-prompt set Effort: High 94.1% www-cdn.anthropic.com for Claude Opus 5 (high) on DeepSearchQA 900-prompt set (opens in a new tab) F1 score Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSearchQA 900-prompt set DeepSearchQA 900-prompt set Effort: xHigh 94.6% www-cdn.anthropic.com for Claude Opus 5 (xhigh) on DeepSearchQA 900-prompt set (opens in a new tab) F1 score Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSearchQA 900-prompt set DeepSearchQA 900-prompt set Effort: Max 95.0% www-cdn.anthropic.com for Claude Opus 5 (max) on DeepSearchQA 900-prompt set (opens in a new tab) F1 score Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSearchQA 900-prompt set DeepSWE 1.1 Effort: Low 57.7% www-cdn.anthropic.com for Claude Opus 5 (low) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 Effort: Medium 66.9% www-cdn.anthropic.com for Claude Opus 5 (medium) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 Effort: High 68.0% www-cdn.anthropic.com for Claude Opus 5 (high) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 Effort: xHigh 69.7% www-cdn.anthropic.com for Claude Opus 5 (xhigh) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 Effort: Max 74.0% deepswe.datacurve.ai for Claude Opus 5 (max) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported September 22, 2026 Benchmark leaderboard Datacurve Independent Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 Effort: Max 68.8% www-cdn.anthropic.com for Claude Opus 5 (max) on DeepSWE 1.1 (opens in a new tab) DeepSWE Pass@1 Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on DeepSWE 1.1 DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Effort: xHigh Configuration: Mercor mini-swe-agent, 500 steps, 2 hours 70.2% mercor.com for Claude Opus 5 (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 Claude Opus 5 on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Effort: Max Configuration: Mercor mini-swe-agent, 500 steps, 2 hours 71.4% mercor.com for Claude Opus 5 (max) 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 Claude Opus 5 on DeepSWE 1.1 — Mercor mini-swe-agent, 500 steps Finance Agent Benchmark 2 — October 2026 evaluation 58.6% vals.ai for Claude Opus 5 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 Claude Opus 5 on Finance Agent Benchmark 2 — October 2026 evaluation FrontierSWE 2 — October 2026 evaluation Configuration: Proximus harness, 5 trials, 20-hour budget 52.0% frontierswe.com for Claude Opus 5 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 Claude Opus 5 on FrontierSWE 2 — October 2026 evaluation Global MMLU Original Effort: Max 92.5% www-cdn.anthropic.com for Claude Opus 5 (max) on Global MMLU Original (opens in a new tab) Average accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Global MMLU Original GPQA Diamond — Epoch AI harness Effort: Low Configuration: Epoch AI harness 87.9% epoch.ai for Claude Opus 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 August 6, 2026 at 10:21 PM UTC Benchmark leaderboard Epoch AI Independent Record for Claude Opus 5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Epoch AI harness Effort: Max Configuration: Epoch AI harness 93.9% epoch.ai for Claude Opus 5 (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 24, 2026 at 6:40 PM UTC Benchmark leaderboard Epoch AI Independent Record for Claude Opus 5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Epoch AI harness Configuration: Epoch AI harness 92.9% epoch.ai for Claude Opus 5 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 10:21 PM UTC Benchmark leaderboard Epoch AI Independent Record for Claude Opus 5 on Graduate-Level Google-Proof Q&A Diamond — Epoch AI harness GPQA Diamond — Mercor single-shot Effort: Max Configuration: Mercor single-shot agent 93.6% mercor.com for Claude Opus 5 (max) 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 Claude Opus 5 on Graduate-Level Google-Proof Q&A Diamond — Mercor single-shot GPQA Diamond — Vals AI harness Configuration: Vals AI harness: mean of zero-shot and few-shot CoT 93.4% vals.ai for Claude Opus 5 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 5 on Graduate-Level Google-Proof Q&A Diamond — Vals AI harness HLAB October 2026 evaluation 6.7% vals.ai for Claude Opus 5 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 Claude Opus 5 on Harvey's Legal Agent Benchmark October 2026 evaluation Humanity's Last Exam Full set — No tools Effort: Low Configuration: No tools 47.8% www-cdn.anthropic.com for Claude Opus 5 (low) on Humanity's Last Exam Full set — No tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — No tools Humanity's Last Exam Full set — No tools Effort: Medium Configuration: No tools 54.2% www-cdn.anthropic.com for Claude Opus 5 (medium) on Humanity's Last Exam Full set — No tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — No tools Humanity's Last Exam Full set — No tools Effort: High Configuration: No tools 56.0% www-cdn.anthropic.com for Claude Opus 5 (high) on Humanity's Last Exam Full set — No tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — No tools Humanity's Last Exam Full set — No tools Effort: xHigh Configuration: No tools 56.4% www-cdn.anthropic.com for Claude Opus 5 (xhigh) on Humanity's Last Exam Full set — No tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — No tools Humanity's Last Exam Full set — No tools Effort: Max Configuration: No tools 56.3% www-cdn.anthropic.com for Claude Opus 5 (max) on Humanity's Last Exam Full set — No tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — No tools Humanity's Last Exam Full set — With tools Effort: Low Configuration: With tools 56.1% www-cdn.anthropic.com for Claude Opus 5 (low) on Humanity's Last Exam Full set — With tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — With tools Humanity's Last Exam Full set — With tools Effort: Medium Configuration: With tools 61.3% www-cdn.anthropic.com for Claude Opus 5 (medium) on Humanity's Last Exam Full set — With tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — With tools Humanity's Last Exam Full set — With tools Effort: High Configuration: With tools 63.2% www-cdn.anthropic.com for Claude Opus 5 (high) on Humanity's Last Exam Full set — With tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — With tools Humanity's Last Exam Full set — With tools Effort: xHigh Configuration: With tools 64.8% www-cdn.anthropic.com for Claude Opus 5 (xhigh) on Humanity's Last Exam Full set — With tools (opens in a new tab) Humanity's Last Exam Accuracy Reported July 24, 2026 System card Anthropic Self-reported Record for Claude Opus 5 on Humanity's Last Exam Full set — With tools