
Flask
ExpressJS
Django
Yii Framework
Bottle
Ruby on Rails
Laravel
FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Cursor
Claude Code
Google Antigravity
warp by spolu
Windsurf Editor
opencode
Codex 3.0 by OpenAI
The AI IDE for prototype to production

Which is more popular?
Based on our record, FastAPI should be more popular than Kiro. It has been mentioned 312 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | fastapi.tiangolo.com | kiro.dev |
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| Company | Startup from Colombia | — |
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What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
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Walkthroughs and reviews on video.
FastAPI from the ground up
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Amazon's NEW AI IDE is Actually Different (in a good way!) – Kiro
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using FastAPI and Kiro. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding. The...
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack...
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Recommendations tracked on public social media and blogs since March 2021.


I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / about 1 month ago
The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / 4 months ago
We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthesize a final answer. We did the obvious thing first: a FastAPI handler that ran the... - Source: dev.to / 5 months ago
I was at a conference recently and watched Joel Hooks talk about Effect. Effect homepage h1 advertises that it's the "Reliable TypeScript for the AI era". Joel explained that AI agents (Kiro, Claude Code, etc) can write way better... - Source: dev.to / 13 days ago
Amazon Kiro is an AI-powered IDE that combines agentic coding with spec-driven development. Powers are packages of expertise and tooling that activate on demand based on keywords in your conversation. Mention "secrets" or "API keys" in a... - Source: dev.to / about 1 month ago
2025 was the year the industry moved to specifications. GitHub Spec Kit brought structure to agent workflows. Amazon Kiro built an IDE around requirements, design, and tasks. Tessl made the strongest commercial case that specs are... - Source: dev.to / about 2 months ago
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