Cypher is a graph query language for Neo4j and AgensGraph
Gremlin is the graph traversal language and virtual machine of Apache TinkerPop™
"Neo4j and cypher is still faster and obviously this has no effect on the gremlin queries on neo4j but that might be just a issue with the gremlin implementation for neo4j"
from question "Are Blueprints/Gremlin graph DB queries inherently slow?"
"Recently we noticed that cypher queries run faster than gremlin so we decided to convert our queries"
from question "Neo4j - Issue converting gremlin query to cypher"
"In this case a traversal-oriented approach is best maybe gremlin is better since cypher doesn t allow you to specify traversal order"
from question "Cypher's and Gremlin's Grammar and Semantics"
"But i read in this post that group by on union are not possible yet it mean that cypher is less powerful than gremlin"
from question "Cypher union group by sum"
|Much more clear||
"Cypher seems much more clear to me than gremlin and in general it seems that the guys in neo4j are going with cypher"
from question "Neo4j - Cypher vs Gremlin query language"