fastapi vs echo
Two of the top projects in Backend and cloud templates, side by side: who leads on each score part and who each one suits, then setup, license, activity and what each review found.
fastapi
Python web framework for typed REST APIs with automatic OpenAPI docs
echo
Minimalist Go web framework with a radix-tree router and middleware
Verdict
fastapi ranks higher, 90 to 88. Of the 4 score parts we measure for both, fastapi leads on 2, echo on 1 and 1 is even.
- Adoptionfastapi leads by 11 points, 99 to 88.
- FreshnessEven at 100.
- Maintenancefastapi leads by 12 points, 100 to 88.
- Agent-readyecho leads by 55 points, 55 to 0: a wide gap.
Pick fastapi if you are
Python developers building API backends, including model-serving ones
- Validates path, query, header, cookie, form and JSON body data from type hints alone
- Generates OpenAPI schema plus Swagger UI and ReDoc pages with no extra setup
Pick echo if you are
Go developers building HTTP APIs and backend services
- Built on net/http; interoperates via echo.WrapHandler and echo.WrapMiddleware
- Middleware at root, group or route level, with a single HTTPErrorHandler
| What we compare | fastapi | echo |
|---|---|---|
| Score parts, out of 100 | ||
| Adoption | 99, widely used | 88, widely used |
| Freshness | 100, active | 100, active |
| Maintenance | 100, healthy | 88, healthy |
| Agent-ready | 0, none | 55, partly |
| Facts from GitHub and the README | ||
| Stars | 104.7k | 32.8k |
| License | MIT (permissive) | MIT (permissive) |
| Last commit | Nov 2026 | Nov 2026 |
| Last release | Nov 2026 | Nov 2026 |
| Language | Python | Go |
| Docker | No | No |
| GPU | Not needed | Not needed |
| arm64 or Apple Silicon | Not stated | Not stated |
fastapi
FastAPI is a Python framework for building HTTP APIs from standard type hints. It uses Starlette for the web layer and Pydantic for validation and serialization, and generates OpenAPI and JSON Schema documentation with Swagger UI at /docs and ReDoc at /redoc. It is a general-purpose framework, not an AI-specific starter.
Who it is for: Python developers building API backends, including model-serving ones
Strengths
- Validates path, query, header, cookie, form and JSON body data from type hints alone
- Generates OpenAPI schema plus Swagger UI and ReDoc pages with no extra setup
- Includes dependency injection, OAuth2/JWT, HTTP Basic auth, WebSockets and CORS
- `fastapi dev` gives auto-reload; `fastapi run` is the production command
Weaknesses
- No model, agent or other AI functionality included; you wire that in yourself
- No ORM or database layer; persistence is left to other libraries
- Relies on Starlette and Pydantic, so changes in either affect your app
- Productivity figures come from an internal team's estimates, not reproducible benchmarks
- Python
- Needs Starlette, Pydantic, Uvicorn
echo
Echo is a Go web framework built on net/http. It adds a radix-tree router, route groups, request binding for JSON, XML, form, query and path data, and centralized error handling. It ships middleware such as a log/slog request logger and panic recovery, and supports TLS, HTTP/2, autocert and graceful shutdown. It has no AI-specific features; the README lists NVIDIA's LLM API gateway among its users.
Who it is for: Go developers building HTTP APIs and backend services
Strengths
- Built on net/http; interoperates via echo.WrapHandler and echo.WrapMiddleware
- Middleware at root, group or route level, with a single HTTPErrorHandler
- Binding for JSON, XML, form, query and path parameters with pluggable validation
- v5 released 2026-01-18; v4 gets security fixes until 2027-12-31
Weaknesses
- No AI, model or agent features; it is a generic HTTP framework
- v5 changes the API from v4; upgrading requires following API_CHANGES_V5.md
- API key/JWT auth, tenant isolation and admin console are in paid Echo Pro
- Library only; no starter app or project scaffold included
- Go
- Needs Go
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