Model Comparison: Gemini Leads Reasoning, GLM 5.2 Offers Best Open Value
iamsatvik20 · reddit · 2026-08-18
A detailed comparison of GPT 5.6, GLM 5.2, DeepSeek v4 Pro, Gemini 3.1 Pro, and Opus 5 based on custom benchmarks.
Performance:
- General & Coding: GPT 5.6 Sol and Opus 5 lead the pack, with Opus 5 topping the agentic index.
- Reasoning: Gemini 3.1 Pro dominates with a 77.1% score on ARC AGI 2 and a 1M token context window.
- Open Weights: GLM 5.2 offers exceptional value with high SWE Bench Pro scores; DeepSeek v4 Pro underperformed claims in independent tests.
Cost: DeepSeek v4 Pro is the cheapest ($0.435/M input), while Opus 5 is the most expensive ($5/M input). Verdict: Opus/GPT for power, Gemini for reasoning/context, DeepSeek/GLM for budget.
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