local ai registry · agent view · /biz/ca/san-francisco/pinecrest-diner-san-francisco-ca
# Pinecrest Diner Diner — San Francisco, California. Registry entry: https://localairegistry.com/biz/ca/san-francisco/pinecrest-diner-san-francisco-ca **AI Score: 73/100** (Good, verified September 10, 2026) — methodology: https://localairegistry.com/methodology ## What AI assistants say (named by 2 of 2) ### ChatGPT — named Asked: "best diner in San Francisco" (checked September 10, 2026) > Pinecrest Diner Located in Union Square, this 24-hour establishment is known for its hearty breakfast options and classic American fare. ### Perplexity: no answer on record We have no answer from Perplexity to show. ### Gemini — named Asked: "best diner in San Francisco" (checked September 9, 2026) > Pinecrest Diner (Union Square/Financial District): Another old-school, bustling diner known for its quick service and classic breakfast and lunch fare. ## Known for Pinecrest Diner is best known for its 24-hour dining service, making it a staple for late-night food seekers and breakfast lovers in Union Square. - 24 Hour Restaurant in San Francisco - Late-Night Food in Union Square ## What reviews say > Pinecrest Diner offers a mix of experiences, with some customers enjoying the nostalgic diner atmosphere and hearty portions, while others report unsanitary practices and rude service. The diner is often busy, leading to long waits and inconsistent service quality, which detracts from the overall experience. Consistently praised: - Juicy hamburgers - Excellent breakfast - Great fries - Decent portions Recurring complaints: - Unsanitary food handling - Rude staff interactions - Long wait times for service - Inconsistent food quality Bottom line: While Pinecrest Diner has its fans for classic diner fare, many reviews highlight serious concerns about cleanliness and service. ## Score breakdown | Signal | Weight | Score /100 | | --- | --- | --- | | Retrieval grounding | 26% | 100 | | Off-property attestation | 20% | 41 | | AI visibility | 14% | 100 | | Reviews & response | 12% | 77 | | Backlink & citation authority | 8% | 57 | | Google Business Profile | 8% | 90 | | Speed & mobile | 7% | — | | Content freshness & schema | 5% | 57 | ## Others on record in San Francisco - Lori's Diner — AI Score 66 - 16th Street Diner — AI Score 35 - Jasmin's — AI Score 34 - Local Diner — AI Score 34 Pinecrest Diner ranks 1 of 10 in its category here. ## Facts - Address: 401 Geary St, San Francisco, CA 94102, USA - Phone: (415) 885-6407 - Website: pinecrestdiner.com - Price: $$ - Hours Mon: 7:00 AM – 11:00 PM - Hours Tue: 7:00 AM – 11:00 PM - Hours Wed: 7:00 AM – 11:00 PM - Hours Thu: 7:00 AM – 12:00 AM - Hours Fri: Open 24 hours - Hours Sat: Open 24 hours - Hours Sun: 12:00 AM – 11:00 PM ## Questions ### What are the operating hours of Pinecrest Diner and which days are they closed? Pinecrest Diner is open Monday through Wednesday from 7:00 AM to 11:00 PM, Thursday from 7:00 AM to 12:00 AM, and is open 24 hours on Friday and Saturday. On Sunday, they are open from 12:00 AM to 11:00 PM. ### What is Pinecrest Diner known for? Pinecrest Diner is known for its excellent breakfast and delicious hamburgers, which are praised for their juicy meat and decent portions. ### What is the price range at Pinecrest Diner? The price range at Pinecrest Diner is considered to be reasonable, offering good quality food for the price. ### Where is Pinecrest Diner located? Pinecrest Diner is located at 401 Geary St, San Francisco, CA 94102, USA. --- Source: Local AI Registry (https://localairegistry.com). The registry re-checks every entry.