SupaKeeper Plain comparisons of AI coding tools

Aider vs OpenCode in 2026

Compare Aider, OpenCode and AgentHydra for AI coding session managers: what each does, what it costs and what to check before you choose one.

By SupaKeeper ยท

SupaKeeper is published by LunarWerx, which makes some of the tools compared here.

AgentHydra, made by the team that publishes this site, shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run, and splits work across accounts [1] [1].

OptionWhat its sources say it doesCostAccount or install
AiderThe page does not describe what Aider does; check Aider's own pages for what it is for.not published in the factsnot published in the facts
OpenCodeThe page does not describe what OpenCode does; check OpenCode's own pages for what it is for.not published in the factsnot published in the facts
AgentHydraShows Claude Code, Codex and OpenCode sessions in one list, splits work across accounts, tracks cost at API list prices [1] [1] [1]Free, no account or subscription, open source under MIT License [1] [1]Tray app needs Windows; on Windows, install with PowerShell, GitHub Releases, or run from source with Bun [1] [1]

The short answer

This page does not describe Aider or OpenCode and points you to their own pages for what each one does. Check Aider's own pages for how Aider works, and check OpenCode's own pages for how OpenCode works. AgentHydra is made by the team that publishes this site, and it shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run [1]. It also splits a task's pieces across Claude Code CLI sessions on your accounts and moves a worker to another account when one nears its limit [1]. Pick by what you need: for the details of Aider or OpenCode, check their own pages, and for managing several sessions and accounts at once, AgentHydra is built for that [1] [1].

What Aider, OpenCode is built for

This page does not describe what Aider or OpenCode is built for, because the facts used here give no description of either one's features. Check each tool's own pages for what it does, what it supports and how it works. The rest of this page covers only the approved claims about AgentHydra.

What AgentHydra is built for

AgentHydra is made by the team that publishes this site. It shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run [1]. It lets you type a reply into a Claude session's own desktop chat, or send one message to several sessions [1]. It moves a Claude chat, history included, to another of your accounts [1]. It splits a task's pieces across Claude Code CLI sessions on your accounts, and moves a worker to another account when one nears its limit [1]. It shows cost at API list prices by day, model, project and account [1]. It pairs each failed shell command with the command that fixed it, and can copy those pairs out as a rules file for your agents [1]. It lists each Claude and Codex account with its plan and quota, and can open, focus, quit, create and delete Claude Desktop instances [1]. It exposes its features as MCP tools, including usage checks so an agent knows how much quota is left [1]. It packs a task and its repository into a Markdown file, leaving out common secret files, then copies a prompt and opens ChatGPT for you to send yourself [1]. It prints the same cost numbers as JSON from the command line [1].

Pricing and fees

The facts provided for this page do not state a price for Aider or for OpenCode, so no price is published here for either one. Check each tool's own pages if you need the cost of using it. AgentHydra is free, with no account or subscription [1]. It is open source under the MIT License [1]. You still pay whatever your model provider charges for API calls; AgentHydra shows those costs at API list prices but does not charge for them itself [1].

Setting it up and daily use

The facts provided for this page do not describe how to install or set up Aider or OpenCode, so none is stated here. Check each tool's own pages for how to install it and what a normal session looks like. AgentHydra on Windows installs with a one line PowerShell script, or you download a build from GitHub Releases or run from source with Bun [1]. The tray app needs Windows; macOS and Linux builds exist but have not been verified [1]. Day to day, it shows your sessions in one list, updated live while they run [1], and tracks cost by day, model, project and account [1]. You can type a reply into a Claude session's desktop chat or send one message to several sessions [1].

Things to check before you choose

Ask what you need the tool to do. The facts here give no detail on what Aider and OpenCode do, so check their own pages for features. Ask which model providers you need; the facts here do not list providers for either rival, so check each tool's pages for the full list. Ask whether you manage multiple accounts; AgentHydra lists accounts with their quota and moves work between them [1] [1], so if that matters, check whether Aider or OpenCode do it on their pages. Ask about your operating system; AgentHydra's tray app needs Windows, and its macOS and Linux builds have not been verified [1]. Check how much you spend on model API calls; AgentHydra shows cost at API list prices [1].

How to choose

Aider and OpenCode are the rivals here, but the facts provided do not give enough detail to match a specific need to either one, so check their own pages. If you run several Claude Code, Codex or OpenCode sessions at once and want them in one searchable list, AgentHydra provides that [1]. If you split work across accounts and need to move a worker when one nears its limit, AgentHydra does that [1]. If you need to see what you spend on model API calls by day, model, project and account, AgentHydra shows that at API list prices [1]. If you want a tool that is free and open source, AgentHydra is [1] [1]; the facts here do not state whether Aider or OpenCode are free or open source, so check their pages.

Frequently asked questions

Is Aider free to use?

The facts provided for this page do not state a price for Aider, so none is published here because the facts are silent on it. Check Aider's own pages for the cost of using it and for any license terms that apply, since the verified facts here give no amount or payment model.

Is OpenCode free to use?

The facts provided for this page do not state a price for OpenCode, so none is published here because the facts are silent on it. Check OpenCode's own pages for the cost of using it and for any license terms that apply, since the verified facts here give no amount or payment model.

What does AgentHydra cost?

AgentHydra is free, with no account or subscription [1]. It is open source under the MIT License [1]. You still pay whatever your model provider charges for API calls; AgentHydra shows those costs at API list prices but does not charge for them itself [1].

Can AgentHydra show OpenCode sessions?

AgentHydra shows Claude Code, Codex and OpenCode sessions on your machine in one searchable list, updated live while they run [1]. The facts here give no detail on whether Aider or OpenCode show sessions from other tools, so check their own pages for anything similar.

Does Aider work with git repositories?

The facts provided for this page do not state whether Aider works with git repositories, so nothing is claimed here either way. No detail about Aider's features is given in the verified facts here. Check Aider's own pages for whether it reads, edits or commits files in a git repository.

Free, with no account or subscription. [1]

Try AgentHydra

Sources

  1. AgentHydra's own description of itself (the product of this site's publisher)

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