Two different savings, often confused
Subscription savings come from cancelling or downgrading a plan you no longer need. Usage savings come from fewer paid calls or a cheaper eligible route. Using a seat less does not lower its invoice. Count both, separately.
Standalone tools versus a coordinated workspace
With standalone Claude, ChatGPT, Codex, Grok and Gemini, you manage accounts, histories and invoices yourself. Symphony coordinates supported connections so a task can move from research to build to review in one place. It is a coordination layer. It is not a bundle that replaces every provider subscription.
Use one model when one is enough
Do not send every routine question to every connected provider. Save extra calls for research depth, a hard build, or a review that would change the decision. The difference depends on your route, accounts and provider prices.
Count ChatGPT and Codex once
Codex may sit inside a ChatGPT plan, while API-key usage is billed separately. Do not double-count a bundled subscription in the baseline. Symphony’s OpenAI integration uses Codex. It does not reproduce every ChatGPT app feature. Check the invoice in front of you.
Compare the total, including what you keep
Add retained subscriptions, expected provider usage, any Symphony fee, and other recurring tools. Remove a plan from the estimate only if you can stop paying for it and still do the work. There is no public Symphony checkout price on this website. Enter your own assumed fee in the calculator.
Measure against useful work
Compare a representative set of tasks. Include retries, review calls, and the time you spend checking results. Time saved is a productivity measure, not a line on the AI invoice. Real net savings can be smaller, zero, or negative. Better coordination can still be worth the fee.