As part of a YouTube video , I went through a bunch of serializers to see their current levels of performance. I'm happy for this repository to be improved in terms of fixing any minor issues, adding new scenarios or adding serialization frameworks.
.NET 10 - Binary (Last Run 2026-01-27)
Method
data
Mean
Error
StdDev
Median
Min
Max
Gen0
Gen1
Gen2
Allocated
MemoryPack_Deserialize
Small
58.60 us
0.518 us
0.433 us
58.54 us
57.74 us
59.54 us
5.2490
1.7090
-
263712 B
Bebop_Deserialize
Small
69.32 us
0.603 us
0.503 us
69.49 us
68.48 us
70.14 us
5.3711
2.6855
-
271976 B
GroBuf_Deserialize
Small
87.62 us
1.735 us
1.623 us
87.07 us
86.03 us
91.05 us
5.2490
1.7090
-
263784 B
Hyperion_Deserialize
Small
156.09 us
2.267 us
2.121 us
155.00 us
154.10 us
160.29 us
6.1035
1.9531
-
315232 B
ProtoBufNet_Deserialize
Small
179.38 us
2.374 us
2.221 us
178.99 us
175.86 us
184.31 us
5.3711
1.7090
-
270232 B
MsgPack_Deserialize
Small
181.83 us
2.895 us
2.708 us
180.58 us
177.65 us
185.74 us
6.3477
1.9531
-
322224 B
MessagePack_Deserialize
Small
188.58 us
2.923 us
2.591 us
188.53 us
185.02 us
194.21 us
5.1270
1.7090
-
263712 B
BSON_Deserialize
Small
634.14 us
12.391 us
12.724 us
632.04 us
617.21 us
666.96 us
13.6719
3.9063
-
701856 B
CBOR_Deserialize
Small
726.58 us
9.939 us
9.297 us
723.16 us
716.24 us
742.58 us
4.8828
0.9766
-
263888 B
AvroConvert_Deserialize
Small
799.89 us
15.608 us
13.836 us
800.85 us
778.34 us
822.65 us
23.4375
7.8125
-
1212811 B
MemoryPack_Deserialize
Medium
1,730.99 us
33.205 us
31.060 us
1,723.75 us
1,680.50 us
1,793.02 us
128.9063
83.9844
-
6532960 B
Bebop_Deserialize
Medium
2,114.38 us
40.804 us
43.660 us
2,106.52 us
2,038.08 us
2,197.67 us
132.8125
74.2188
-
6732424 B
GroBuf_Deserialize
Medium
2,239.64 us
36.218 us
37.193 us
2,229.51 us
2,195.87 us
2,337.69 us
128.9063
78.1250
-
6533032 B
Hyperion_Deserialize
Medium
4,178.03 us
75.188 us
70.331 us
4,163.21 us
4,041.03 us
4,311.89 us
148.4375
78.1250
-
7789296 B
ProtoBufNet_Deserialize
Medium
4,806.51 us
77.923 us
69.077 us
4,815.45 us
4,676.01 us
4,918.26 us
132.8125
70.3125
-
6693080 B
MsgPack_Deserialize
Medium
4,951.15 us
58.342 us
48.718 us
4,957.21 us
4,873.06 us
5,027.38 us
156.2500
101.5625
-
7992936 B
MessagePack_Deserialize
Medium
5,023.95 us
46.639 us
38.946 us
5,010.15 us
4,988.89 us
5,111.67 us
125.0000
70.3125
-
6532960 B
AvroConvert_Deserialize
Medium
15,584.78 us
311.647 us
709.777 us
15,371.05 us
14,646.55 us
17,489.67 us
333.3333
-
-
27973812 B
BSON_Deserialize
Medium
16,944.69 us
254.312 us
225.441 us
16,965.89 us
16,641.48 us
17,422.88 us
343.7500
187.5000
-
17297736 B
CBOR_Deserialize
Medium
18,763.49 us
192.816 us
180.360 us
18,716.01 us
18,546.26 us
19,101.29 us
125.0000
31.2500
-
6533136 B
MemoryPack_Deserialize
Large
28,480.17 us
489.499 us
619.059 us
28,459.89 us
27,531.77 us
29,566.49 us
687.5000
656.2500
187.5000
26179013 B
GroBuf_Deserialize
Large
31,123.57 us
599.308 us
736.005 us
31,244.02 us
30,121.20 us
32,712.47 us
687.5000
656.2500
187.5000
26179082 B
Bebop_Deserialize
Large
31,199.68 us
578.133 us
791.355 us
31,268.80 us
29,511.71 us
32,585.58 us
750.0000
718.7500
218.7500
26980581 B
MessagePack_Deserialize
Large
40,768.68 us
804.164 us
1,203.635 us
40,566.98 us
39,044.56 us
43,176.89 us
666.6667
583.3333
166.6667
26178952 B
ProtoBufNet_Deserialize
Large
41,651.98 us
825.888 us
1,489.247 us
41,366.05 us
39,410.55 us
44,965.42 us
636.3636
545.4545
181.8182
26819234 B
Hyperion_Deserialize
Large
45,861.43 us
827.616 us
1,534.039 us
45,520.00 us
43,038.36 us
50,297.82 us
727.2727
636.3636
181.8182
31179836 B
MsgPack_Deserialize
Large
48,526.49 us
1,132.700 us
3,176.211 us
47,864.77 us
44,146.65 us
58,062.75 us
727.2727
636.3636
181.8182
32018868 B
BSON_Deserialize
Large
82,505.49 us
1,338.907 us
1,118.048 us
82,170.30 us
80,846.00 us
84,451.40 us
1000.0000
-
-
69296648 B
CBOR_Deserialize
Large
93,495.77 us
1,700.449 us
1,958.240 us
93,641.66 us
90,872.48 us
97,455.17 us
666.6667
500.0000
166.6667
26179123 B
AvroConvert_Deserialize
Large
96,603.79 us
1,842.595 us
4,307.008 us
95,905.85 us
88,961.50 us
110,164.90 us
1500.0000
1000.0000
-
112646136 B
MemoryPack_Serialize
Small
29.92 us
0.456 us
0.427 us
29.81 us
29.49 us
30.86 us
15.3809
15.3809
15.3809
98827 B
GroBuf_Serialize
Small
52.73 us
0.483 us
0.428 us
52.61 us
52.12 us
53.54 us
29.2358
29.2358
29.2358
189635 B
Bebop_Serialize
Small
65.31 us
0.583 us
0.517 us
65.15 us
64.44 us
66.12 us
-
-
-
-
MessagePack_Serialize
Small
76.49 us
1.453 us
1.288 us
75.86 us
75.21 us
79.27 us
1.3428
-
-
69336 B
ProtoBufNet_Serialize
Small
132.01 us
2.433 us
2.498 us
131.03 us
128.49 us
137.68 us
4.3945
0.7324
-
228616 B
Hyperion_Serialize
Small
150.60 us
0.934 us
0.729 us
150.38 us
149.60 us
151.82 us
28.0762
23.4375
23.1934
384314 B
MsgPack_Serialize
Small
172.07 us
3.425 us
4.688 us
169.90 us
166.01 us
180.21 us
11.7188
2.1973
-
596032 B
AvroConvert_Serialize
Small
226.91 us
2.150 us
1.795 us
227.45 us
224.48 us
230.84 us
53.4668
44.9219
44.9219
699053 B
CBOR_Serialize
Small
432.34 us
2.183 us
2.042 us
432.36 us
429.07 us
435.46 us
47.3633
46.8750
46.8750
282000 B
BSON_Serialize
Small
617.90 us
3.319 us
2.942 us
617.93 us
613.48 us
624.14 us
103.5156
93.7500
93.7500
1074658 B
MemoryPack_Serialize
Medium
1,160.10 us
21.034 us
19.676 us
1,153.16 us
1,130.71 us
1,193.22 us
44.9219
44.9219
44.9219
2446073 B
GroBuf_Serialize
Medium
1,536.95 us
21.251 us
19.879 us
1,532.46 us
1,505.51 us
1,571.38 us
80.0781
80.0781
80.0781
4688393 B
Bebop_Serialize
Medium
1,939.76 us
10.332 us
9.665 us
1,936.72 us
1,928.48 us
1,956.84 us
-
-
-
-
MessagePack_Serialize
Medium
2,347.63 us
19.786 us
18.508 us
2,344.86 us
2,323.03 us
2,381.54 us
19.5313
19.5313
19.5313
1737163 B
ProtoBufNet_Serialize
Medium
3,616.98 us
38.971 us
36.454 us
3,615.96 us
3,569.04 us
3,685.85 us
136.7188
136.7188
136.7188
7090477 B
MemoryPack_Serialize
Large
4,421.75 us
41.549 us
36.832 us
4,407.52 us
4,383.34 us
4,506.45 us
23.4375
23.4375
23.4375
9818534 B
Hyperion_Serialize
Medium
4,829.83 us
83.152 us
77.781 us
4,815.19 us
4,697.72 us
4,994.36 us
117.1875
93.7500
93.7500
7196817 B
MsgPack_Serialize
Medium
4,910.87 us
210.038 us
619.301 us
4,576.39 us
4,312.26 us
6,365.79 us
484.3750
437.5000
437.5000
15024012 B
GroBuf_Serialize
Large
5,866.50 us
82.453 us
68.852 us
5,866.07 us
5,750.46 us
5,949.06 us
62.5000
62.5000
62.5000
18824593 B
Bebop_Serialize
Large
7,803.08 us
124.266 us
116.238 us
7,787.77 us
7,673.75 us
8,089.99 us
-
-
-
-
AvroConvert_Serialize
Medium
8,584.76 us
198.541 us
585.403 us
8,656.65 us
6,782.32 us
9,540.36 us
523.4375
460.9375
453.1250
14688558 B
MessagePack_Serialize
Large
9,737.70 us
118.544 us
105.086 us
9,702.39 us
9,598.68 us
9,936.31 us
-
-
-
7196864 B
CBOR_Serialize
Medium
11,032.44 us
53.426 us
44.614 us
11,034.91 us
10,969.34 us
11,104.22 us
78.1250
78.1250
78.1250
6976120 B
ProtoBufNet_Serialize
Large
15,391.88 us
150.953 us
141.202 us
15,452.92 us
15,213.55 us
15,593.49 us
187.5000
187.5000
187.5000
27893449 B
BSON_Serialize
Medium
17,465.30 us
337.291 us
315.502 us
17,385.07 us
17,041.27 us
18,222.42 us
343.7500
156.2500
156.2500
22030238 B
Hyperion_Serialize
Large
22,064.15 us
427.043 us
399.456 us
21,916.19 us
21,393.27 us
22,805.01 us
125.0000
31.2500
31.2500
28827414 B
AvroConvert_Serialize
Large
27,065.59 us
519.945 us
533.945 us
26,796.13 us
26,508.96 us
28,451.35 us
406.2500
125.0000
125.0000
58901806 B
MsgPack_Serialize
Large
29,938.69 us
597.353 us
1,594.455 us
30,274.85 us
25,897.10 us
32,986.87 us
718.7500
562.5000
562.5000
67711742 B
CBOR_Serialize
Large
47,750.86 us
766.150 us
716.657 us
47,506.22 us
46,906.84 us
49,060.20 us
90.9091
-
-
34038424 B
BSON_Serialize
Large
70,826.86 us
1,232.575 us
1,092.646 us
70,977.39 us
69,262.30 us
72,810.54 us
714.2857
-
-
88364960 B
.NET 10 - JSON (Last Run 2026-01-27)
Method
data
Mean
Error
StdDev
Median
Min
Max
Ratio
RatioSD
Gen0
Gen1
Gen2
Allocated
Alloc Ratio
UTF8Json_Deserialize
Large
63,663.3 us
1,247.41 us
2,014.33 us
63,459.0 us
60,291.2 us
67,786.9 us
0.82
0.12
625.0000
500.0000
125.0000
44666.22 KB
1.61
SpanJson_Deserialize
Large
71,378.4 us
2,036.76 us
6,005.44 us
70,187.6 us
59,708.5 us
87,731.0 us
0.92
0.15
777.7778
666.6667
222.2222
44666.35 KB
1.61
SystemTextJson_Deserialize
Large
79,153.6 us
3,919.59 us
11,557.00 us
72,910.8 us
65,929.8 us
107,322.8 us
1.02
0.21
571.4286
428.5714
142.8571
27752.75 KB
1.00
SystemTextJson_SrcGen_Deserialize
Large
90,394.5 us
1,805.02 us
5,031.69 us
89,972.5 us
81,859.4 us
104,290.0 us
1.17
0.17
571.4286
428.5714
142.8571
27752.75 KB
1.00
ServiceStack_Deserialize
Large
157,694.0 us
3,544.85 us
10,340.49 us
156,266.8 us
135,520.4 us
181,665.2 us
2.03
0.31
1000.0000
750.0000
250.0000
37471.39 KB
1.35
NewtonsoftJson_Deserialize
Large
174,056.7 us
4,876.56 us
14,378.66 us
172,044.8 us
139,549.5 us
209,101.4 us
2.24
0.36
1000.0000
750.0000
250.0000
39137.7 KB
1.41
SpanJson_Deserialize
Medium
8,265.4 us
164.94 us
284.51 us
8,202.3 us
7,717.5 us
8,793.6 us
0.75
0.03
250.0000
187.5000
109.3750
11124.6 KB
1.60
SystemTextJson_SrcGen_Deserialize
Medium
10,754.0 us
184.80 us
172.86 us
10,718.4 us
10,538.6 us
11,037.1 us
0.98
0.02
140.6250
78.1250
-
6935.35 KB
1.00
UTF8Json_Deserialize
Medium
10,836.1 us
214.92 us
238.89 us
10,871.8 us
10,436.4 us
11,243.3 us
0.99
0.02
250.0000
187.5000
109.3750
11124.6 KB
1.60
SystemTextJson_Deserialize
Medium
10,992.0 us
139.67 us
130.65 us
10,973.3 us
10,826.5 us
11,313.5 us
1.00
0.02
140.6250
78.1250
-
6935.35 KB
1.00
ServiceStack_Deserialize
Medium
18,920.3 us
246.41 us
205.76 us
18,999.5 us
18,547.3 us
19,178.4 us
1.72
0.03
187.5000
93.7500
-
9357.05 KB
1.35
NewtonsoftJson_Deserialize
Medium
20,442.8 us
212.02 us
177.05 us
20,492.0 us
20,114.7 us
20,714.8 us
1.86
0.03
187.5000
62.5000
-
9776.7 KB
1.41
SpanJson_Deserialize
Small
305.0 us
3.53 us
3.30 us
303.5 us
301.8 us
312.7 us
0.73
0.01
52.2461
52.2461
52.2461
446.97 KB
1.60
UTF8Json_Deserialize
Small
364.2 us
3.45 us
3.22 us
363.6 us
359.8 us
372.0 us
0.87
0.01
52.7344
48.3398
47.3633
447.09 KB
1.60
SystemTextJson_SrcGen_Deserialize
Small
405.7 us
3.45 us
3.22 us
406.1 us
400.8 us
410.2 us
0.97
0.01
5.3711
2.4414
-
279.73 KB
1.00
SystemTextJson_Deserialize
Small
419.7 us
2.94 us
2.75 us
418.5 us
416.0 us
425.1 us
1.00
0.01
5.3711
2.4414
-
279.73 KB
1.00
ServiceStack_Deserialize
Small
724.2 us
4.56 us
4.27 us
723.3 us
717.3 us
730.7 us
1.73
0.01
6.8359
2.9297
-
379.04 KB
1.36
NewtonsoftJson_Deserialize
Small
768.9 us
10.90 us
10.20 us
766.0 us
753.2 us
789.4 us
1.83
0.03
7.8125
4.8828
-
398.46 KB
1.42
SpanJson_Serialize
Large
13,138.2 us
96.97 us
90.70 us
13,114.6 us
13,000.1 us
13,292.0 us
0.46
0.01
78.1250
78.1250
78.1250
16384.12 KB
0.48
SystemTextJson_Serialize
Large
28,383.6 us
503.89 us
446.68 us
28,253.6 us
27,723.6 us
29,462.4 us
1.00
0.02
93.7500
93.7500
93.7500
33828.82 KB
1.00
SystemTextJson_SrcGen_Serialize
Large
29,613.2 us
298.94 us
279.63 us
29,623.1 us
29,090.4 us
30,131.6 us
1.04
0.02
93.7500
93.7500
93.7500
33828.82 KB
1.00
UTF8Json_Serialize
Large
39,119.9 us
748.11 us
1,270.36 us
39,192.4 us
36,894.2 us
42,374.5 us
1.38
0.05
928.5714
928.5714
928.5714
82320.34 KB
2.43
NewtonsoftJson_Serialize
Large
51,640.5 us
996.18 us
883.09 us
51,514.1 us
50,298.2 us
52,754.3 us
1.82
0.04
900.0000
700.0000
-
81289.28 KB
2.40
ServiceStack_Serialize
Large
55,926.5 us
700.10 us
620.62 us
55,863.6 us
55,210.1 us
57,482.4 us
1.97
0.04
888.8889
-
-
77247.95 KB
2.28
SpanJson_Serialize
Medium
3,291.5 us
21.52 us
20.13 us
3,300.7 us
3,255.9 us
3,317.9 us
0.33
0.00
113.2813
113.2813
113.2813
4096.17 KB
0.49
SystemTextJson_SrcGen_Serialize
Medium
10,010.5 us
102.89 us
96.25 us
10,004.7 us
9,842.7 us
10,200.9 us
0.99
0.01
156.2500
156.2500
156.2500
8380.34 KB
1.00
SystemTextJson_Serialize
Medium
10,079.5 us
116.83 us
109.28 us
10,090.1 us
9,848.8 us
10,297.5 us
1.00
0.01
156.2500
156.2500
156.2500
8380.34 KB
1.00
UTF8Json_Serialize
Medium
10,804.8 us
201.67 us
207.10 us
10,837.6 us
10,395.5 us
11,126.6 us
1.07
0.02
546.8750
546.8750
546.8750
20445.63 KB
2.44
NewtonsoftJson_Serialize
Medium
14,191.3 us
282.51 us
614.15 us
14,319.6 us
12,473.3 us
15,420.8 us
1.41
0.06
578.1250
531.2500
343.7500
20167 KB
2.41
ServiceStack_Serialize
Medium
15,221.0 us
285.31 us
280.21 us
15,285.8 us
14,596.1 us
15,612.8 us
1.51
0.03
421.8750
187.5000
187.5000
19050.33 KB
2.27
SpanJson_Serialize
Small
117.5 us
1.22 us
1.14 us
118.2 us
115.6 us
118.5 us
0.43
0.00
73.3643
73.3643
73.3643
256.12 KB
0.76
UTF8Json_Serialize
Small
178.8 us
1.86 us
1.74 us
178.5 us
176.3 us
181.9 us
0.65
0.01
148.4375
148.4375
148.4375
551.82 KB
1.64
SystemTextJson_SrcGen_Serialize
Small
273.9 us
3.68 us
3.44 us
272.8 us
269.0 us
280.1 us
0.99
0.01
90.3320
90.3320
90.3320
336.21 KB
1.00
SystemTextJson_Serialize
Small
275.9 us
1.50 us
1.33 us
275.7 us
274.1 us
278.7 us
1.00
0.01
90.3320
90.3320
90.3320
336.21 KB
1.00
NewtonsoftJson_Serialize
Small
476.8 us
9.04 us
8.46 us
475.3 us
467.1 us
497.0 us
1.73
0.03
99.6094
92.7734
89.8438
821.16 KB
2.44
ServiceStack_Serialize
Small
582.9 us
7.50 us
6.65 us
581.4 us
575.6 us
596.1 us
2.11
0.03
90.8203
82.0313
82.0313
763.02 KB
2.27