The Best Smart WiFi Thermostats of 2025, Picked by 5 Leading AIs
We gave 5 top AIs—GPT-5, Claude, Gemini, Grok, and DeepSeek—one mission: rank the best smart WiFi thermostats after analyzing thousands of reviews and debating key features like energy savings and compatibility. Here's their final, AI-verified verdict.
No.1 AI-Picked Product
We had 5 AI models rank their top 5 products. We tallied the scores. Here's the winner with the highest score.
ecobee Smart Thermostat Premium
The ecobee Smart Thermostat Premium was ranked #1 by 4 out of 5 AIs, earning a perfect average rank of 1 across its appearances. It won for superior energy efficiency, saving up to 26% on heating and cooling via radar occupancy sensors and Eco+ optimization, plus unmatched compatibility with Matter, Alexa, HomeKit, and Google Assistant. The built-in air quality monitor and intuitive touchscreen further solidify its position as the ultimate smart WiFi thermostat for 2025.
What Each AI's Top Pick:
"This model combines top-tier energy savings (SmartSensor, radar occupancy, Eco+) with an elegant, intuitive UI and one of the easiest guided installs. Broad smart home compatibility—including Matter, Alexa built-in, Apple HomeKit/Siri, and Google Assistant—plus an onboard air quality monitor make its premium price feel justified."
"Leads the market with superior AI learning capabilities that automatically optimize energy usage, reducing bills by up to 23%. Features the most intuitive interface with excellent Google Assistant and Matter compatibility, plus professional installation support."
"This thermostat earns the top spot for its unmatched versatility, including a remote SmartSensor for room-specific temperature control and native support for all major smart home ecosystems. The intuitive interface and detailed energy reports provide granular control for power users seeking to maximize savings."
"This thermostat tops the list for 2025 due to its exceptional energy efficiency, saving up to 26% on heating and cooling costs through advanced AI learning and occupancy sensors that adjust temperatures based on room usage. It features straightforward DIY installation in under 30 minutes, an intuitive touchscreen user interface with voice control via built-in Siri/Alexa/Google Assistant, broad compatibility with Apple HomeKit, Amazon Alexa, Google Home, and Samsung SmartThings, all at a competitive price of around $250, with standout innovations like radar-based motion detection and air quality monitoring."
"Ranked #1 for its superior energy efficiency with built-in occupancy sensors, seamless integration with all major smart home platforms, and a user-friendly touchscreen interface. The included SmartSensor technology for room-specific temperature control sets it apart."
The AI Smart thermostat WiFi Leaderboard
See the total score and rank each product received from every AI model
ecobee Smart Thermostat Premium
Google Nest Learning Thermostat (4th Gen)
Amazon Smart Thermostat
Honeywell Home T9 Smart Thermostat
Google Nest Thermostat
Google Nest Learning Thermostat
Google Nest Learning Thermostat (3rd Gen)
ecobee Smart Thermostat Enhanced
ecobee Smart Thermostat with Voice Control
Emerson Sensi Touch Smart Thermostat
Emerson Sensi Touch 2 Smart Thermostat
Honeywell Home T10 Pro Smart Thermostat
Honeywell Home T9 Smart Thermostat with Smart Room Sensor
Johnson Controls GLAS Smart Thermostat
Wyze Thermostat
See Each AI's Full Top 5 Ranking
Here's exactly how each AI ranked the products. Click on each AI to see their complete, unedited reasoning.
GPT-5's Top 5 Rankings
Claude Sonnet 4's Top 5 Rankings
Gemini 2.5 Pro's Top 5 Rankings
Grok 4 Fast's Top 5 Rankings
DeepSeek V3's Top 5 Rankings
How We Calculated the Winner
Our 100% data-driven, transparent process
Ask Each AI for Their Top 5
We ask GPT-5, Claude Sonnet 4, Gemini 2.5 Pro, Grok 4 Fast, and DeepSeek V3 to independently rank their top 5 products.
Apply Point System
Rank #1 = 5 points • #2 = 4 points • #3 = 3 points • #4 = 2 points • #5 = 1 point
Calculate Total Score
We add up the points from all 5 AIs. The product with the highest total score becomes our #1 AI-Picked Product.
You Decide
We show you the data. You make the choice based on your priorities and needs. This is a 100% data-driven process—we don't change the results.
Our Process
Independent Analysis
We ask ChatGPT-4, Claude 3.5, Gemini, and Perplexity the same question separately. No AI sees another's answer.
Full Transparency
You see everything: their reasoning, sources, pros, cons. We don't hide disagreements or cherry-pick answers.
You Decide
We present the data. You make the choice based on your priorities, budget, and needs. Because you're absolutely right.
Updated Monthly
Product markets change. We re-run AI debates monthly to keep recommendations current.
Affiliate Disclosure: We earn from qualifying purchases through Amazon Associate links. This helps us maintain this free service. Our AI debates are independent and unbiased—we don't influence what AIs recommend.