Cosine vs Jules (2026): which should you pick?

Pick Cosine if

• Fits if you want a coding agent in the terminal with a choice of models
• Works for a developer who wants cloud agents and an air-gapped option

Look elsewhere if

• Skip it if you want to try it free, as the cheapest plan is $19 a month
• Watch out: credits are used at different multipliers by model, so 4M credits is a moving target
• Not for you if you want a Windows or Linux desktop app, as the desktop page offers Mac only
• Watch out: the pricing page lists three tiers, the billing docs six, with different names

Pick Jules if

• Fits if your code lives on GitHub and you want chores done in the background
• Works for solo developers who can live inside 15 tasks a day

Look elsewhere if

• Skip it if you use GitLab or Bitbucket, because the docs describe GitHub only
• Watch out: the docs say limits and features may change, as it is an experimental beta
• Tight if you want more, since paid tiers come only through Google AI Pro or Ultra
• Watch out: paid tiers are for individual gmail.com accounts for now, and their prices are not on the Jules pages

Cosine

• There is no free plan or free trial on the pricing page; the cheapest plan is $19 a month.
• Usage is billed in credits, and different models use them at different multipliers, so how far 4M credits goes depends on the model chosen.
• The pricing page lists three tiers, while the billing docs list six (Starter, Builder, Team, Scale, Professional and Enterprise) with different names for the $199 and $999 tiers.
• The desktop page offers a Mac download only; the CLI docs cover macOS (Apple Silicon only), Linux and Windows.

Jules

• It works with GitHub repositories; the docs describe no other code host.
• Paid tiers come only through Google AI Pro or Ultra, and for now only for individual @gmail.com accounts.
• The Jules pages do not state the Google AI plan prices, so no monthly figure is recorded here.
• The docs call Jules an experimental coding agent in public beta, and say limits and features may change.

Cosine

CLI coding agent

The cos command runs the agent in a terminal alongside your editor and tests. Every agent turn is saved as a lightweight git commit, so changes can be undone.

Desktop app

A native app for working on local project folders, with plan review, diffs, and built-in browser and terminal panels. The product page offers a Mac download.

Cloud agents

Tasks can run in remote workspaces, each session in an isolated microVM, so long jobs continue after your laptop is closed. The site says 20 or more agents can run in parallel.

Swarm mode and memory

An orchestrator can spawn child agents that work in parallel, and project conventions persist across sessions.

Model choice

The model list includes Cosine's own Lumen models along with models from OpenAI, Anthropic and Google, each with a credit multiplier.

Sovereign and air-gapped deployment

For regulated organizations the company offers fully air-gapped, managed single-tenant and public cloud options.

Jules

Plan before changes

After a prompt, Jules writes a plan that you can review and approve before any code is edited.

Cloud virtual machine

Jules clones the repository into a virtual machine, installs dependencies and edits files there, so work continues while you are away.

Pull requests on GitHub

Finished work arrives as a diff you can browse and approve, then as a pull request. Adding a 'jules' label to an issue also assigns it a task.

AGENTS.md support

Jules reads an AGENTS.md file in the repository root to learn conventions and how to work with the codebase.

Scheduled and suggested tasks

The docs describe scheduled tasks and suggested tasks, and there is a command-line tool and a REST API alongside the web app.

Cosine

• Starter$19

  per month, for 4M credits a month

  For solo developers and side projects. Extra credits cost $6.50 per 1M.

• Team$199

  per month, for 47M credits a month

  For growing teams. Extra credits cost $5.00 per 1M. The billing docs name this $199 tier Scale and list a $99 tier for 23M credits.

• Enterprise$999

  per month, for 240M credits a month

  For highly regulated industries. Extra credits cost $4.50 per 1M. The pricing page also invites teams to ask about a more custom arrangement.

Jules

• Jules$0

  15 tasks per day, 3 concurrent tasks, powered by Gemini 2.5 Pro.

• Jules in ProIncluded

  with a Google AI Pro subscription

  100 tasks per day, 15 concurrent tasks and higher access to the latest models, starting with Gemini 3 Pro.

• Jules in UltraIncluded

  with a Google AI Ultra subscription

  300 tasks per day, 60 concurrent tasks and priority access to the latest models.