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Firefox 154 vs 149
Version Support Lifecycle Comparison
vs
Version 154
154
Active
Release Date2026-08-18
Support Ends-
EOL DateTBD
Latest Version154.0
Version 149
149
End of Life
Release Date2026-03-24
Support Ends-
EOL Date2026-04-21
Days LeftExpired 136 days ago
Latest Version149.0.2
💡 Upgrade Recommendation
154 currently has a longer support lifecycle. If you're using 149, keep an eye on its EOL date.
About Version Comparison
This page compares Firefox versions 154 and 149. Learn about each version's release date, support end date, and EOL (End of Life) date to make informed upgrade decisions.
Other Version Comparisons
154 vs 153154 vs 152154 vs 151154 vs 150154 vs 149154 vs 148154 vs 147154 vs 146154 vs 145153 vs 152153 vs 151153 vs 150153 vs 149153 vs 148153 vs 147153 vs 146153 vs 145152 vs 151152 vs 150152 vs 149152 vs 148152 vs 147152 vs 146152 vs 145151 vs 150151 vs 149151 vs 148151 vs 147151 vs 146151 vs 145150 vs 149150 vs 148150 vs 147150 vs 146150 vs 145149 vs 148149 vs 147149 vs 146149 vs 145148 vs 147148 vs 146148 vs 145147 vs 146147 vs 145146 vs 145
Showing comparisons for the latest 10 versions. Firefox has 55 versions total.