Update performance comparison section in README to reflect Ruby 4.0.0 alongside 3.4.4 and 2.7.8, including context for benchmark results.

Author: jvmvik

README.md

@@ -1011,7 +1011,7 @@ see: [https://serpapi.com/yelp-search-api](https://serpapi.com/yelp-search-api)
 
 ## Performance Comparison
 
-### Ruby 3.4.4 vs Ruby 2.7.8 Performance
+### Ruby 4.0.0 vs 3.4.4 vs Ruby 2.7.8 Performance
 
 | Metric | Ruby 2.7.8 | Ruby 3.4.4 | Ruby 4.0.0 | Improvement (3.4.4 vs 2.7.8) | Improvement (4.0.0 vs 3.4.4) |
 |--------|------------|------------|------------|------------------------------|------------------------------|
@@ -1027,7 +1027,9 @@ see: [https://serpapi.com/yelp-search-api](https://serpapi.com/yelp-search-api)
 4. **SerpApi Optimization**: Shows consistent ~2.2x improvement with persistent connections regardless of Ruby version
 5. **Ruby 4.0.0 Performance**: Shows mixed results with some regressions compared to 3.4.4, particularly for HTTP.rb persistent connections. Ruby 4.0.0 was just released for Christmas 2025, and HTTP.rb has not been optimized for it yet.
 
-The older library (google-search-results-ruby) was performing at 55 req/s on Ruby 2.7.8, which is 2x slower than the current version (serpapi-ruby) on Ruby 3.4.4.
+The older library (google-search-results-ruby) was performing at 55 req/s on Ruby 2.7.8, which is 2x slower than the current version (serpapi-ruby) on Ruby 3.4.4 or 4.0.0. 
+
+**Context** This benchmark was performed on warmup search results using a MacBook Pro 2025 connected via Wi-Fi 6.0 home network on AT&T fiber from Austin, TX (no network optimization). 
 
 ## Migration quick guide
 

README.md.erb

@@ -492,7 +492,7 @@ see: [https://serpapi.com/yelp-search-api](https://serpapi.com/yelp-search-api)
 
 ## Performance Comparison
 
-### Ruby 3.4.4 vs Ruby 2.7.8 Performance
+### Ruby 4.0.0 vs 3.4.4 vs Ruby 2.7.8 Performance
 
 | Metric | Ruby 2.7.8 | Ruby 3.4.4 | Ruby 4.0.0 | Improvement (3.4.4 vs 2.7.8) | Improvement (4.0.0 vs 3.4.4) |
 |--------|------------|------------|------------|------------------------------|------------------------------|
@@ -508,7 +508,9 @@ see: [https://serpapi.com/yelp-search-api](https://serpapi.com/yelp-search-api)
 4. **SerpApi Optimization**: Shows consistent ~2.2x improvement with persistent connections regardless of Ruby version
 5. **Ruby 4.0.0 Performance**: Shows mixed results with some regressions compared to 3.4.4, particularly for HTTP.rb persistent connections. Ruby 4.0.0 was just released for Christmas 2025, and HTTP.rb has not been optimized for it yet.
 
-The older library (google-search-results-ruby) was performing at 55 req/s on Ruby 2.7.8, which is 2x slower than the current version (serpapi-ruby) on Ruby 3.4.4.
+The older library (google-search-results-ruby) was performing at 55 req/s on Ruby 2.7.8, which is 2x slower than the current version (serpapi-ruby) on Ruby 3.4.4 or 4.0.0. 
+
+**Context** This benchmark was performed on warmup search results using a MacBook Pro 2025 connected via Wi-Fi 6.0 home network on AT&T fiber from Austin, TX (no network optimization). 
 
 ## Migration quick guide