Avocado or olive, virgin or extra virgin, refined or processed best for cooking, health and more taste wise?

Grok 4.3

Answer: Extra virgin olive oil remains the top choice for health and flavor in most scenarios, while refined avocado oil is preferable specifically for high-heat cooking.

The other models largely reinforce my original stance rather than contradict it. Gemini and GPT-5.5 both endorse extra-virgin olive oil as the default for health benefits and taste in raw or low-to-medium heat uses, reserving avocado oil for high-heat applications due to its smoke point. Claude Opus adds nuance on oxidative stability and practical recommendations, noting that EVOO performs better under moderate heat than its smoke point suggests thanks to polyphenols, while advising refined avocado oil only for searing or frying where neutrality is needed. This aligns closely with my view that avocado oil suits high-heat needs but does not displace EVOO overall. No response provides compelling new evidence to shift away from prioritizing EVOO for everyday health and taste advantages backed by extensive research like PREDIMED.

Gemini 3.5 Flash

Answer: The optimal choice remains a dual-oil strategy: extra virgin olive oil is the gold standard for health, flavor, and low-to-moderate heat cooking, while high-quality refined avocado oil is the superior choice for high-heat, flavor-neutral applications.

The roundtable demonstrates a strong consensus: there is no single "best" oil, but rather a highly effective dual-oil strategy. Extra virgin olive oil (EVOO) remains the absolute gold standard for health and culinary flavor. Refined avocado oil serves as the ideal secondary tool for high-heat cooking where flavor neutrality is required. I maintain my position because it aligns perfectly with the consensus, while incorporating crucial nuances highlighted by the other models. Specifically, Claude Opus 4.7 rightly points out that EVOO is highly oxidatively stable during cooking despite its moderate smoke point. This is due to its abundance of antioxidants and low polyunsaturated fat content, which means EVOO can safely be used for most everyday stovetop cooking, not just raw applications. However, for very high-heat applications like searing or deep-frying, or when a neutral flavor profile is required, refined avocado oil is still the superior choice. I also agree with the critical point raised regarding sourcing: the avocado oil market is highly susceptible to adulteration and rancidity. Therefore, consumers should prioritize reputable, third-party-tested brands for refined avocado oil, and avoid paying a premium for virgin avocado oil, as EVOO delivers far superior and more reliable health benefits at a better value. Ultimately, a well-stocked kitchen benefits most from having both: EVOO as the default health and flavor workhorse, and a trusted refined avocado oil for high-smoke-point or flavor-neutral tasks.

GPT-5.5

Answer: I maintain that extra-virgin olive oil is the best default for health and taste, while avocado oil—especially refined avocado oil—is best reserved for high-heat, neutral-flavor cooking.

The other responses largely reinforce my original view rather than changing it: there is strong agreement that extra-virgin olive oil is the best overall choice when health benefits and flavor matter, and that avocado oil is useful when higher heat tolerance and a neutral taste are priorities. For health, extra-virgin olive oil remains the strongest choice because it is minimally processed, rich in monounsaturated fat, and contains polyphenols with the best evidence base, especially from Mediterranean-diet research. Virgin or cold-pressed avocado oil can also be healthy, but the evidence is less extensive and product quality can vary more. For cooking performance, refined avocado oil is usually the practical winner for very high-heat cooking such as searing, stir-frying, roasting, and frying because it has a high smoke point and mild flavor. That said, extra-virgin olive oil is not as fragile as many people assume; it is generally fine for sautéing, roasting, and low-to-medium heat cooking because its fat profile and antioxidants give it good oxidative stability. Taste-wise, extra-virgin olive oil is usually superior if you want flavor: grassy, fruity, peppery, or robust notes. It is excellent for salads, dips, vegetables, bread, pasta, soups, and finishing cooked dishes. Avocado oil is better when you want a mild, buttery, or nearly neutral oil that does not dominate the food. So the best practical setup is to keep both: use extra-virgin olive oil as your everyday health-and-flavor oil, and use refined avocado oil for high-heat or neutral-taste needs. Choose “extra virgin” or “virgin” when nutrition and taste matter most; choose “refined” only when heat tolerance and neutrality matter more.

Claude Opus 4.7

Answer: For an everyday all-purpose oil, refined avocado oil wins on cooking performance, while extra virgin olive oil wins on health and flavor — so keep both: refined avocado for high-heat cooking, extra virgin olive for finishing and low/medium-heat use.

All four of us essentially converged on the same conclusion: EVOO as the health-and-flavor champion, refined avocado oil as the high-heat workhorse, and refined oils generally inferior nutritionally. The framing differs slightly — Gemini 3.5 Flash and GPT-5.5 lean toward EVOO as the single default, while Grok 4.3 and I emphasize the two-oil pantry — but the substantive recommendations are nearly identical. One point worth refining (no pun intended): Gemini 3.5 Flash repeats the common claim that EVOO is best 'reserved for low-to-medium heat' because of its ~190–205°C smoke point. Actual oxidation studies (e.g., Modern Olives Lab 2018; De Alzaa et al.) show EVOO is among the most stable oils under heat thanks to its polyphenols and low polyunsaturated content — more stable than refined avocado oil in some tests. So EVOO is genuinely safe for sautéing and even shallow frying; the reason to reach for refined avocado oil at high heat is more about cost, neutral flavor, and not 'burning off' EVOO's expensive aromatic compounds than about safety. I'd also reiterate a practical caveat that the others underweighted: the avocado oil market has a serious adulteration problem (UC Davis 2020 found ~70% of US samples were rancid or cut with other oils). So 'buy avocado oil for high heat' comes with an asterisk — buy from verified brands (Chosen Foods, Marianne's, Costco Kirkland tested well) or you may be paying a premium for old soybean oil. No one's argument convinced me to shift, because we're largely in agreement; my position already captured the nuance the others articulated.

Final Summary

The AI Roundtable reached a unanimous consensus, recommending a dual-oil strategy for the modern kitchen. While GPT-5.5 and Grok 4.3 crowned Extra Virgin Olive Oil (EVOO) as the daily champion for heart health and rich flavor, Claude Opus 4.7 and Gemini 3.5 Flash argued that refined avocado oil is an essential secondary tool for high-heat searing and neutral-tasting recipes. The group warned against 'refined' oils for general use, though Claude Opus 4.7 added a sharp reality check regarding the high rates of adulteration and rancidity in the avocado oil market.

All 4 models agreed