Aider vs Kilo Code: Which AI Agent Is Better?
An in-depth comparison of Aider and Kilo Code across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.
An in-depth comparison of Aider and Kilo Code across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.
Either way, you pay for the model calls. A median coding-agent day on our gateway is 95 requests and 8.6 million tokens. The table prices every step at one model’s rate.
Both run on Standard Compute, where each step goes to the cheapest model that can do it: routine steps go to efficient open models, hard ones to frontier models such as Claude Fable 5.1 or GPT-6 Astra.
| Model | Typical day | Busy day |
|---|---|---|
| Claude Opus 5.5 | $7.34 | $59.10 |
| Claude Sonnet 5.5 | $3.67 | $29.55 |
| GPT-6 Luna | $0.23 | $2.43 |
Fixed monthly plans from $19. Eligible new accounts can try $0.25 of compute first, no card. Trial terms
Pick a winner in each category. You can change your vote anytime. 1 vote cast so far.
AiderKilo CodeChoose Aider if you are developers who want a flexible, BYO-model terminal coding tool. Choose Kilo Code if you are vS Code users who want an open-source AI coding assistant.
In our editorial scoring, Aider leads in 3 of six categories (output quality, autonomy and reliability), while Kilo Code leads in 2 (speed and ease of use). On price, Aider runs free (byo api key) and is open source; Kilo Code runs free (free models or byo key) / kilo pass from $19/mo and is open source.
Across 1 community votes on this matchup, Aider currently leads in 1 of six categories. Cast your own vote above to move the needle.
What it costs to run Aider or Kilo Code
Best API for Aider →
5 options compared, with prices and limits
Best API for Kilo Code →
4 options compared, with prices and limits
Standard Compute sends each step to the cheapest model that can do it, on providers we vet for price, uptime and speed. Plans start at $19 a month, and eligible new accounts can try $0.25 of compute with no card. Choose your agent below to connect.
See the trial and activation steps →
More on Kilo Code: How do I run Kilo Code on a fixed monthly budget?
Aider is an open-source (Apache 2.0) AI pair programming tool that works in your terminal. It can edit multiple files, understand your git history, create commits, and works with virtually any LLM via API. It earned its reputation with a practical approach to real-world coding tasks and strong benchmark scores, but development has gone quiet: the last release was 0.86.2 in February 2026 and the last commit came in May 2026.
Kilo Code is an open-source (MIT) coding agent that runs as a VS Code extension, a JetBrains plugin and Kilo CLI (a fork of OpenCode). It supports multi-file editing, refactoring and context-aware code generation. The tools are free: you can start on its free models without a card, bring your own key for any OpenAI-compatible API, or buy models through Kilo's gateway at provider rates, with the optional Kilo Pass from $19 a month adding bonus credits.
Aider and Kilo Code both run on Standard Compute
