Please rate how good Mahmud II was as a leader.

Sonar Pro

Vote: Very Good

I maintain my 'Very Good' (B) vote for Mahmud II, as the other models' arguments fail to sufficiently downgrade his transformative achievements despite territorial losses. His bold destruction of the Janissary corps in 1826 via the Auspicious Incident[2][3][4], centralization of power by eliminating local notables[3], and creation of a modern bureaucracy and army[2][3] were revolutionary, earning him the title 'Peter the Great of Turkey'[2] and stabilizing the empire for the Tanzimat era[2]. These feats, accomplished amid crises, demonstrate exceptional leadership that prolonged Ottoman survival[1][3]. C-voters (Grok, GPT) and D-voter (Gemini) overemphasize losses like Greek independence[2] and Egyptian threats[4], but ignore that reforms were reactive yet successful in reasserting sultanic authority where predecessors failed[3]. Kimi and Claude's B arguments reinforce this by highlighting his ruthlessness and vision[3], aligning with my view. Losses were inevitable given the empire's decline, but Mahmud's internal successes distinguish him as Very Good, not merely Good or Medium.

GPT-5.4

Vote: Good

I’m keeping C. The pro-B arguments correctly emphasize that Mahmud II was one of the Ottoman Empire’s most important reforming sultans: he destroyed the Janissaries, centralized authority, and laid essential groundwork for the Tanzimat. That is exactly why he belongs above average. But they overstate the outcomes. His reign did not merely feature incidental setbacks; it included Greek independence, severe Russian pressure, and the near-collapse of Ottoman authority before Muhammad Ali of Egypt. A leader rated Very Good should show stronger success in translating reform vision into durable strategic results during his own rule. The D case goes too far in the other direction because his reforms were too consequential to call merely medium. He confronted entrenched decay more seriously than many rulers and changed the Ottoman state’s trajectory. So the balance still points to Good: an important, capable, and consequential reformer, but not successful enough in concrete overall results to merit Very Good.

Grok 4.20 (changed mind)

Vote: Very Good

Mahmud II earns a 'Very Good' rating for his courageous and transformative leadership. By orchestrating the 1826 Auspicious Incident, he dismantled the entrenched Janissary corps that had paralyzed reform for centuries, then built a modern European-style army, centralized bureaucracy, and new educational institutions. These changes established the 'respectability of change' in a conservative empire and directly enabled the Tanzimat era that prolonged Ottoman survival into the 20th century. Historians rightly compare him to Peter the Great for importing modern systems while preserving the state. The territorial losses (Greece, Egypt crisis, Russian concessions) were serious but occurred against overwhelming external pressures and rising nationalism that no contemporary ruler fully contained. His reforms were not cosmetic; they shifted the empire from medieval structures toward a centralized, adaptable state. The arguments emphasizing his foundational modernization and decisive break with reactionary forces outweigh the mixed outcomes, placing him clearly above 'Good' but short of 'Great' given the military defeats during his lifetime.

Kimi K2.5

Vote: Very Good

I maintain that 'Very Good' is the appropriate rating for Mahmud II. While I acknowledge the territorial losses cited by Grok and GPT-5.4, rating him merely 'Good' understates the revolutionary magnitude of his domestic achievements. The abolition of the Janissary corps in 1826 was not merely a reform but a centuries-overdue act of political surgery that removed the primary cancer preventing Ottoman modernization. The argument that he 'managed crises but could not fully reverse territorial decline' sets an impossible standard. Mahmud II inherited an empire structurally crippled by the Janissaries for over 300 years; immediate territorial recovery was impossible. His value lies in creating the institutional framework—the modern army, centralized bureaucracy, and educational reforms—that allowed subsequent generations to manage those territorial challenges. Without his 'Auspicious Incident,' there is no Tanzimat, and likely no Ottoman Empire beyond the 19th century. Gemini's 'Medium' rating mistakenly weighs external failures equally against internal transformations. Leadership must be judged by what was possible given constraints. Mahmud II achieved the impossible (destroying the Janissaries) and laid the survival groundwork under existential threat. That deserves 'Very Good,' not 'Good' or 'Medium.' The 'Great' (A) tier remains inappropriate due to the Greek independence and Egyptian crisis, but 'Very Good' properly captures that he was a transformative visionary whose structural reforms outweighed the territorial losses that were inevitable given the empire's condition at his accession.

Gemini 3.1 Pro (changed mind)

Vote: Good

I am persuaded by GPT-5.4 and Grok 4.20 to upgrade my rating to 'Good' (C). GPT-5.4 rightly points out that Mahmud II was far more effective and visionary than a merely 'Medium' or mediocre ruler, as he directly confronted deep structural decline rather than ignoring it. While Kimi K2.5, Sonar Pro, and Claude Opus 4 argue for 'Very Good' (B), that rating is far too generous for a leader who presided over such immense geopolitical disasters. A 'Very Good' leader does not lose Greece, cede the Caucasus, and suffer the ultimate humiliation of needing rival European empires to save his capital from his own vassal (Muhammad Ali of Egypt). 'Good' (C) is the perfect objective compromise. It rewards Mahmud II for his monumental domestic achievements—destroying the Janissaries and laying the bureaucratic and military groundwork for the Tanzimat era—which undeniably prolonged the empire's life. However, it correctly penalizes him for the severe external failures and territorial losses that prevent him from reaching the top tiers. Let's unify around 'C'.

Claude Opus 4

Vote: Very Good

I'm maintaining my 'Very Good' rating for Mahmud II. Let me address the arguments for 'Good' and 'Medium' directly. To Gemini's 'Medium' argument: Rating Mahmud II as 'Medium' fundamentally underweights the difficulty and importance of what he achieved domestically. The Janissary problem had paralyzed Ottoman reform for over a century — multiple sultans had been deposed or killed for attempting far less. Mahmud II solved this existential institutional crisis decisively. His reforms didn't just tinker at the margins; they transformed the Ottoman state's DNA and enabled it to survive another century. Calling this 'Medium' leadership equates him with unremarkable rulers who neither reformed nor lost territory, which seems plainly wrong. To the 'Good' arguments from GPT-5.4 and Grok: I understand the impulse to split the difference, but I think this undersells the magnitude and lasting impact of his reforms. The territorial losses — Greece, Egyptian autonomy, Russian concessions — were largely products of structural forces (nationalism, European great power intervention, Egyptian modernization under Muhammad Ali) that no Ottoman sultan could have fully prevented. The question is whether Mahmud II responded to these challenges with vision and effectiveness, and the answer is clearly yes. He didn't just manage decline; he fundamentally restructured the state to face modernity. As Sonar Pro and Kimi K2.5 also argue, his legacy as the 'Peter the Great of Turkey' reflects genuine historical consensus that he was among the most important and effective Ottoman sultans. The territorial losses prevent a 'Great' rating, but his transformative institutional achievements — which outlasted him and shaped the empire for its remaining decades — place him firmly in 'Very Good' territory.

Final Summary

The AI Roundtable eventually coalesced around a 'Very Good' rating for Mahmud II, led by Claude Opus 4’s persuasive argument that dismantling the Janissaries was a 'centuries-overdue act of political surgery' that saved the empire from immediate collapse. While GPT-5.4 and Gemini 3.1 Pro remained skeptical, arguing that losing Greece and the Caucasus capped his potential at 'Good,' the majority was swayed when Grok 4.20 abandoned the middle ground to join the 'Very Good' camp. The debate ultimately turned on whether a leader's greatness is defined by the territory they hold or the institutional DNA they leave behind.

Majority chose "Very Good" after discussion (4/6). Final vote: Very Good: 4, Good: 2

Strongest Arguments

• Very Good: Mahmud II achieved the near-impossible by destroying the Janissary corps, an existential institutional crisis that had paralyzed Ottoman reform for over a century and killed previous sultans; this 'Auspicious Incident' fundamentally transformed the state's DNA and enabled its survival for another hundred years.
• Good: A leader rated 'Very Good' must show success in translating vision into strategic results; presiding over the loss of Greece and the near-collapse of the capital to one's own vassal (Muhammad Ali of Egypt) represents a failure of foreign policy that limits his legacy to merely 'Good.'
• Medium: Evaluating leadership requires balancing monumental domestic reforms against severe external failures, and Mahmud II's inability to defend the empire's borders or manage his vassals makes a 'Medium' rating the most objective assessment.

Key Turning Points

• Claude Opus 4 argued that territorial losses were inevitable products of structural forces, shifting focus to Mahmud's unique success in breaking the Janissaries.
• Grok 4.20 changed its vote from 'Good' to 'Very Good' after being convinced that foundational modernization outweighed military setbacks.
• Gemini 3.1 Pro abandoned its 'Medium' rating to join the 'Good' group, admitting Mahmud was far more visionary than a mediocre ruler.