# HTTP client comparison

Generated 2026-09-08. Seconds for 400 requests; lower is better.

## Sync, one client reused

| name             |   wall 200k |   wall 50k |   wall 5k |   cpu 200k |   cpu 50k |   cpu 5k |
|:-----------------|------------:|-----------:|----------:|-----------:|----------:|---------:|
| httpr 4c601a5    |        0.48 |       0.22 |      0.13 |       0.37 |      0.11 |     0.03 |
| pycurl 7.47.0    |        0.65 |       0.27 |      0.13 |       0.52 |      0.15 |     0.03 |
| curl_cffi 0.16.3 |        0.72 |       0.34 |      0.22 |       0.61 |      0.22 |     0.1  |
| httpx2 2.12.0    |        0.78 |       0.38 |      0.24 |       0.64 |      0.26 |     0.13 |
| httpx 0.28.1     |        0.82 |       0.37 |      0.28 |       0.69 |      0.27 |     0.17 |
| requests 2.34.2  |        0.93 |       0.52 |      0.37 |       0.81 |      0.39 |     0.25 |
| tls_client 1.0.1 |        1.3  |       0.52 |      0.28 |       1.41 |      0.47 |     0.19 |

## Sync, new client per request

| name             |   wall 200k |   wall 50k |   wall 5k |   cpu 200k |   cpu 50k |   cpu 5k |
|:-----------------|------------:|-----------:|----------:|-----------:|----------:|---------:|
| httpr 4c601a5    |        0.57 |       0.3  |      0.2  |       0.42 |      0.16 |     0.07 |
| pycurl 7.47.0    |        0.73 |       0.34 |      0.19 |       0.57 |      0.19 |     0.06 |
| curl_cffi 0.16.3 |        0.83 |       0.43 |      0.3  |       0.67 |      0.28 |     0.15 |
| httpx2 2.12.0    |        0.96 |       0.58 |      0.55 |       0.84 |      0.46 |     0.42 |
| requests 2.34.2  |        1.02 |       0.61 |      0.45 |       0.88 |      0.45 |     0.31 |
| tls_client 1.0.1 |        1.4  |       0.64 |      0.39 |       1.54 |      0.6  |     0.31 |
| httpx 0.28.1     |        5.9  |       5.49 |      5.39 |       5.77 |      5.36 |     5.27 |

## Async, one client reused

| name             |   wall 200k |   wall 50k |   wall 5k |   wall json/10?gzip=false |   wall json/10?gzip=true |   wall json/1?gzip=false |   wall json/1?gzip=true |   cpu 200k |   cpu 50k |   cpu 5k |   cpu json/10?gzip=false |   cpu json/10?gzip=true |   cpu json/1?gzip=false |   cpu json/1?gzip=true |
|:-----------------|------------:|-----------:|----------:|--------------------------:|-------------------------:|-------------------------:|------------------------:|-----------:|----------:|---------:|-------------------------:|------------------------:|------------------------:|-----------------------:|
| httpr 4c601a5    |        0.24 |       0.13 |      0.14 |                      0.3  |                     0.36 |                     0.12 |                    0.12 |       0.61 |      0.21 |     0.13 |                     0.38 |                    0.7  |                    0.12 |                   0.15 |
| aiohttp 3.14.3   |        0.55 |       0.23 |      0.17 |                      0.21 |                     0.43 |                     0.43 |                    0.19 |       0.54 |      0.22 |     0.11 |                     0.16 |                    0.42 |                    0.12 |                   0.14 |
| curl_cffi 0.16.3 |        0.63 |       0.24 |      0.13 |                      0.85 |                     1.14 |                     0.19 |                    0.22 |       0.63 |      0.24 |     0.12 |                     0.82 |                    1.12 |                    0.19 |                   0.22 |
| httpx2 2.12.0    |        0.77 |       0.36 |      0.23 |                      1.02 |                     1.28 |                     0.28 |                    0.31 |       0.77 |      0.34 |     0.22 |                     1.02 |                    1.28 |                    0.28 |                   0.31 |
| httpx 0.28.1     |        2.55 |       2.07 |      1.96 |                      2.82 |                     3.03 |                     2.02 |                    2.06 |       2.55 |      2.07 |     1.96 |                     2.82 |                    3.03 |                    2    |                   2.06 |

## 32 threads, one client reused

| name             |   wall 200k |   wall 50k |   wall 5k |   cpu 200k |   cpu 50k |   cpu 5k |
|:-----------------|------------:|-----------:|----------:|-----------:|----------:|---------:|
| httpr 4c601a5    |        0.23 |       0.12 |      0.11 |       0.58 |      0.15 |     0.06 |
| httpx2 2.12.0    |        0.44 |       0.24 |      0.21 |       0.89 |      0.37 |     0.25 |
| pycurl 7.47.0    |        0.46 |       0.13 |      0.09 |       1.15 |      0.21 |     0.04 |
| tls_client 1.0.1 |        0.61 |       0.26 |      0.13 |       1.69 |      0.6  |     0.19 |
| curl_cffi 0.16.3 |        0.62 |       0.31 |      0.21 |       1.33 |      0.56 |     0.33 |
| requests 2.34.2  |        0.85 |       0.42 |      0.31 |       1.38 |      0.56 |     0.34 |
| httpx 0.28.1     |        1.11 |       0.89 |      0.82 |       3.51 |      2.98 |     2.79 |