fastapi benchmark results
fastapi 0.141 is a python web framework. At concurrency 64 it serves 19 732 requests per second with a P50 latency of 3.30 ms, ranking 309 of 383 overall and 27 of 46 among python frameworks.
- Language: python 3.14
- Framework version: 0.141
- Website: https://fastapi.tiangolo.com
- Compare fastapi →
Throughput, latency & reliability
| Metric | Concurrency 64 | Concurrency 256 | Concurrency 512 |
|---|---|---|---|
| Requests / second | 19 732 | 19 345 | 19 153 |
| P50 latency | 3.30 ms | 13.43 ms | 27.19 ms |
| P75 latency | 3.42 ms | 13.58 ms | 27.40 ms |
| P90 latency | 3.54 ms | 13.75 ms | 27.65 ms |
| P99 latency | 3.66 ms | 14.22 ms | 28.81 ms |
| P99.999 latency | 8.87 ms | 202.87 ms | 1423.87 ms |
| Average latency | 3.31 ms | 13.48 ms | 27.26 ms |
| Minimum latency | 0.69 ms | 0.69 ms | 0.68 ms |
| Standard deviation | 0.23 ms | 3.03 ms | 29.31 ms |
| Total requests | 295 995 | 290 206 | 287 362 |
| Bytes received | 37.62 MB | 36.88 MB | 36.52 MB |
| HTTP errors | 0 | 0 | 0 |
| Request timeouts | 0 | 0 | 0 |
| Socket connection errors | 0 | 0 | 0 |
| Socket read errors | 0 | 0 | 0 |
| Socket write errors | 0 | 0 | 0 |
Position in this benchmark
| Concurrency | Overall | Among python frameworks |
|---|---|---|
| 64 | 309 of 383 | 27 of 46 |
| 256 | 308 of 383 | 26 of 46 |
| 512 | 307 of 383 | 26 of 46 |
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[](https://web-frameworks-benchmark.vercel.app/frameworks/python/fastapi/)Explore python frameworks
| # | Framework | Requests / second | P50 latency | P99 latency | HTTP errors |
|---|---|---|---|---|---|
| 1 | peregrine-wsgi 1.1 | 191 025 | 0.30 ms | 0.85 ms | 0 |
| 2 | weft-wsgi 0.1 | 153 346 | 0.41 ms | 0.52 ms | 0 |
| 3 | fastpysgi-wsgi 0.6 | 147 137 | 0.46 ms | 0.58 ms | 0 |
| 4 | peregrine-asgi 1.1 | 118 540 | 0.55 ms | 0.68 ms | 0 |
| 5 | weft-asgi 0.1 | 118 218 | 0.53 ms | 0.79 ms | 0 |
| 6 | oxapy 0.11 | 85 921 | 0.73 ms | 1.34 ms | 0 |
| 7 | peregrine-blacksheep 2.6 | 74 401 | 0.95 ms | 1.14 ms | 0 |
| 8 | emmett 2.7 | 47 667 | 1.27 ms | 2.98 ms | 0 |
| 9 | asgineer 0.9 | 43 752 | 1.46 ms | 2.09 ms | 0 |
| 10 | mq-bridge-py 0.2 | 41 435 | 1.63 ms | 1.86 ms | 0 |