GPT-5.4-Cyber (OpenAI) vs Hunyuan 3 (Tencent Hy3)

Hunyuan 3 (Tencent Hy3) edges out GPT-5.4-Cyber (OpenAI) by 0.9 points (8.1 vs 7.2) -- a A-tier vs B-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for Hunyuan 3 (Tencent Hy3)'s strengths, so if those categories are your priority, the lead translates.

On pricing, Hunyuan 3 (Tencent Hy3) starts free while GPT-5.4-Cyber (OpenAI) requires a paid plan from day one (Not publicly disclosed+). If you're testing the waters or running an occasional workload, that gap matters more than the score differential. GPT-5.4-Cyber (OpenAI) starts at Not publicly disclosed; Hunyuan 3 (Tencent Hy3) starts at $0. Compare what each entry tier actually unlocks before you compare list prices -- the limits matter more than the headline number.

By use case: pick GPT-5.4-Cyber (OpenAI) when enterprise soc teams, established security research orgs, and vetted individual defenders who can qualify for trusted access for cyber. Pick Hunyuan 3 (Tencent Hy3) when chinese-market builders, multilingual products that need strong cn performance, and cost-sensitive developers who want frontier-class quality at sub-deepseek pricing. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Hunyuan 3 (Tencent Hy3)'s lane, the tier-list ranking and the use-case fit point the same direction; if you're in GPT-5.4-Cyber (OpenAI)'s lane, the score gap matters less than the fit.

Bottom line: Hunyuan 3 (Tencent Hy3) is the safer default for most readers, but GPT-5.4-Cyber (OpenAI) is competitive enough that the tie-breaker is your specific workload, not the spec sheet.