Benchmarks running every hour
.NET Mapper
Benchmarks
Real-time performance comparison of popular .NET object mapping libraries. Automated benchmarks with averaged results from the full history of the last 3 months.
Last updated:
Benchmark Results
Average of last 3 months · Mean execution time in microseconds (μs) · Lower is better
Libraries
SimpleFlat
Flat object with primitive properties
NestedObject
Object containing nested child objects
Collection
Object with a collection of 100 items
NameDifference
Source and target have different property names
Mean Execution Time
Microseconds (μs) per operation · lower is better · average of last 3 months
| Library | Version | SimpleFlat (μs) | NestedObject (μs) | Collection (μs) | NameDifference (μs) |
|---|---|---|---|---|---|
| Manual (foreach) | .NET 10.0.7 | 0.02 μs | 0.04 μs | 2.06 μs | 0.01 μs |
| Manual (LINQ) | .NET 10.0.7 | 0.02 μs | 0.04 μs | 2.21 μs | 0.01 μs |
| AutoMapper | 16.1.1 | 0.07 μs | 0.17 μs | 2.7 μs | 0.07 μs |
| Mapster | 10.0.8-pre06 | 0.03 μs | 0.06 μs | 2.24 μs | 0.03 μs |
| TinyMapper | 3.0.2-beta | 0.03 μs | 0.05 μs | 2.89 μs | 0.02 μs |
| AgileMapper | 1.8.1 | 0.47 μs | 0.5 μs | 2.9 μs | 0.46 μs |
| Mapperly | 5.0.0-next.7 | 0.02 μs | 0.04 μs | 2.27 μs | 0.01 μs |
Memory Allocation
Bytes allocated per operation
| Library | Version | SimpleFlat | NestedObject | Collection | NameDifference |
|---|---|---|---|---|---|
| Manual (foreach) | .NET 10.0.7 | 88 B | 216 B | 9,656 B | 56 B |
| Manual (LINQ) | .NET 10.0.7 | 88 B | 216 B | 9,728 B | 56 B |
| AutoMapper | 16.1.1 | 88 B | 216 B | 10,992 B | 56 B |
| Mapster | 10.0.8-pre06 | 88 B | 216 B | 9,656 B | 56 B |
| TinyMapper | 3.0.2-beta | 88 B | 112 B | 9,656 B | 56 B |
| AgileMapper | 1.8.1 | 352 B | 376 B | 9,920 B | 320 B |
| Mapperly | 5.0.0-next.7 | 88 B | 216 B | 9,656 B | 56 B |
{"run_at":"2026-05-14T13:04:53.7110038+02:00","libraries":[{"name":"Manual (foreach)","version":".NET 10.0.7","cases":[{"name":"SimpleFlat","mean_us":0.02,"median_us":0.02,"p95_us":0.02,"p99_us":0.02,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.04,"median_us":0.04,"p95_us":0.05,"p99_us":0.05,"stddev_us":0,"alloc_bytes":216},{"name":"Collection","mean_us":2.06,"median_us":2.06,"p95_us":2.11,"p99_us":2.11,"stddev_us":0.04,"alloc_bytes":9656},{"name":"NameDifference","mean_us":0.01,"median_us":0.01,"p95_us":0.01,"p99_us":0.01,"stddev_us":0,"alloc_bytes":56}]},{"name":"Manual (LINQ)","version":".NET 10.0.7","cases":[{"name":"SimpleFlat","mean_us":0.02,"median_us":0.02,"p95_us":0.02,"p99_us":0.02,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.04,"median_us":0.04,"p95_us":0.05,"p99_us":0.05,"stddev_us":0,"alloc_bytes":216},{"name":"Collection","mean_us":2.21,"median_us":2.21,"p95_us":2.26,"p99_us":2.26,"stddev_us":0.04,"alloc_bytes":9728},{"name":"NameDifference","mean_us":0.01,"median_us":0.01,"p95_us":0.01,"p99_us":0.01,"stddev_us":0,"alloc_bytes":56}]},{"name":"AutoMapper","version":"16.1.1","cases":[{"name":"SimpleFlat","mean_us":0.07,"median_us":0.07,"p95_us":0.08,"p99_us":0.08,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.17,"median_us":0.17,"p95_us":0.17,"p99_us":0.17,"stddev_us":0,"alloc_bytes":216},{"name":"Collection","mean_us":2.7,"median_us":2.7,"p95_us":2.76,"p99_us":2.77,"stddev_us":0.05,"alloc_bytes":10992},{"name":"NameDifference","mean_us":0.07,"median_us":0.07,"p95_us":0.07,"p99_us":0.07,"stddev_us":0,"alloc_bytes":56}]},{"name":"Mapster","version":"10.0.8-pre06","cases":[{"name":"SimpleFlat","mean_us":0.03,"median_us":0.03,"p95_us":0.03,"p99_us":0.03,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.06,"median_us":0.06,"p95_us":0.06,"p99_us":0.06,"stddev_us":0,"alloc_bytes":216},{"name":"Collection","mean_us":2.24,"median_us":2.24,"p95_us":2.28,"p99_us":2.29,"stddev_us":0.04,"alloc_bytes":9656},{"name":"NameDifference","mean_us":0.03,"median_us":0.03,"p95_us":0.03,"p99_us":0.03,"stddev_us":0,"alloc_bytes":56}]},{"name":"TinyMapper","version":"3.0.2-beta","cases":[{"name":"SimpleFlat","mean_us":0.03,"median_us":0.03,"p95_us":0.03,"p99_us":0.03,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.05,"median_us":0.05,"p95_us":0.05,"p99_us":0.05,"stddev_us":0,"alloc_bytes":112},{"name":"Collection","mean_us":2.89,"median_us":2.88,"p95_us":2.94,"p99_us":2.95,"stddev_us":0.05,"alloc_bytes":9656},{"name":"NameDifference","mean_us":0.02,"median_us":0.02,"p95_us":0.02,"p99_us":0.02,"stddev_us":0,"alloc_bytes":56}]},{"name":"AgileMapper","version":"1.8.1","cases":[{"name":"SimpleFlat","mean_us":0.47,"median_us":0.47,"p95_us":0.48,"p99_us":0.48,"stddev_us":0.01,"alloc_bytes":352},{"name":"NestedObject","mean_us":0.5,"median_us":0.5,"p95_us":0.5,"p99_us":0.5,"stddev_us":0,"alloc_bytes":376},{"name":"Collection","mean_us":2.9,"median_us":2.89,"p95_us":2.95,"p99_us":2.96,"stddev_us":0.05,"alloc_bytes":9920},{"name":"NameDifference","mean_us":0.46,"median_us":0.46,"p95_us":0.47,"p99_us":0.47,"stddev_us":0,"alloc_bytes":320}]},{"name":"Mapperly","version":"5.0.0-next.7","cases":[{"name":"SimpleFlat","mean_us":0.02,"median_us":0.02,"p95_us":0.02,"p99_us":0.02,"stddev_us":0,"alloc_bytes":88},{"name":"NestedObject","mean_us":0.04,"median_us":0.04,"p95_us":0.05,"p99_us":0.05,"stddev_us":0,"alloc_bytes":216},{"name":"Collection","mean_us":2.27,"median_us":2.26,"p95_us":2.31,"p99_us":2.32,"stddev_us":0.05,"alloc_bytes":9656},{"name":"NameDifference","mean_us":0.01,"median_us":0.01,"p95_us":0.01,"p99_us":0.01,"stddev_us":0,"alloc_bytes":56}]}]}
How It Works
A transparent and reproducible benchmarking pipeline for .NET object mappers
⏱
Automated Execution
BenchmarkDotNet benchmarks run automatically every hour on a dedicated VPS.
📊
Averaged Results
Results shown are the average of the full history of the last 3 months, reducing noise and outliers.
🔄
Auto-Updated Libraries
Library versions are updated automatically so benchmarks always reflect the latest releases.
🎯
Multiple Scenarios
Each library is tested across flat mapping, nested objects, collections, and name differences.