How to Change the Model in Claude Code

To change the model in Claude Code, first check which model your installed version supports, then use its model selector or documented command. The interactive command commonly used for this is /model, but exact options can change with the tool version and account. Do not edit project configuration blindly just to force a model name. Confirm access, make the smallest change needed and test the result on a low risk task before using it for important code.

Short Answer

Open Claude Code in the project you intend to work on and check the current session's model controls. If the /model command is available in your version, use it to view or choose from the supported models. If your interface differs, follow the model configuration guide for your installed version rather than copying an old terminal example.

The official Claude Code overview and model configuration guide are the best starting points for current behavior. This run was restricted to the connected repository, so those external pages were not independently reopened. Verify the exact model names, availability and configuration rules before making a persistent change.

What the Question Really Means

A model choice can mean several things. You may want a model that reasons carefully about a difficult codebase, a faster model for a small edit, or a model that your account is allowed to use. You may also be trying to lower usage costs or fix a model error. Those goals are related, but they do not always point to the same option.

It is important to separate a temporary session choice from a saved setting. A command that changes the active session may not update every project or future terminal session. A setting written to a user or project configuration can have a wider effect. Before changing anything, identify whether you need a one time choice or a persistent default.

The model selector is also not a guarantee that every named model is available to every account. Product access can depend on the current subscription, organization settings, region, API arrangement and release version. A model name found in an old guide may no longer appear in your installation.

How It Works

Claude Code uses a model to help interpret requests and propose or perform coding work through its supported tools. The selected model can affect how it handles a complex task, how much context it can use and how it responds. But model choice is only one part of the workflow. Repository instructions, tool permissions, tests, dependency state and human review remain important.

In a terminal session, a supported model command or selector provides a controlled way to view choices. A configuration file may also set a default or provide environment specific behavior, depending on the current version. These are different mechanisms. A temporary choice is usually easier to reverse, while a persistent setting can affect future tasks and teammates if it is stored in a shared project file.

A model switch should not be treated as a repair for every coding failure. A broken test may come from a real code defect, missing dependency, wrong environment variable or stale documentation. A model that generates a different answer does not prove the underlying issue is solved. Keep the error message, inspect the diff and run the relevant test after changing models.

Practical Steps

1. Check the installed version. Open Claude Code in the terminal and use the version information documented for your installation. If the tool is old, check the official update guide before troubleshooting model availability.
2. Inspect the current session. Look for the model control or enter /model if that command is supported. Read the options shown by your actual installation rather than typing a guessed model identifier.
3. Choose the smallest suitable change. For a quick explanation or small refactor, a general available model may be enough. For a difficult multi file task, choose based on current model descriptions and your account's available options.
4. Confirm the choice. If the interface reports the active model, check it before starting a long task. If the selector does not show a clear confirmation, consult the current documentation.
5. Run a low risk test. Ask for a short explanation or a small code change in a clean working tree. Review the output and confirm that the expected tests still pass.
6. Decide whether the choice should persist. If you only need a different model for one task, avoid changing a shared project setting. If the team needs a default, document the reason and check the scope of the setting.
7. Record important changes. When model selection affects a build or production change, record the model choice in the task notes if your team's policy requires it. Keep the code review focused on the code, not just the model label.

Before making a persistent change, inspect the repository instructions and existing configuration. A project may already have conventions for permissions, allowed tools and environment variables. Do not replace those settings simply because an online snippet uses a different arrangement.

Common Problems

The /model command does not work

Your installed version may expose different controls, or the command may not be available in the context you opened. Check the version and current documentation. Do not install a third party wrapper or paste a script from an unknown source to restore a missing command.

The model I want is not listed

The model may not be available to your account, organization or current version. Check your account access and official release notes. Avoid guessing a model identifier and assuming that the tool accepted it.

The change disappears in a new session

You may have changed only the current session. If you need a persistent default, review the documented configuration options and their scope. Before editing a configuration file, back it up or use version control so the change can be reversed.

Claude Code still makes incorrect changes

Changing the model does not remove the need for a clear task, tests and code review. Provide the relevant context, define acceptance criteria, ask for a small patch and inspect the diff. Run tests after the change and verify that the tool did not touch unrelated files.

The bill or usage does not change as expected

Usage depends on the billing arrangement and the actual workload. A model switch may not affect a subscription limit in the way you expect. Check the current official pricing and usage information for your account rather than relying on a remembered per token price.

What Does Not Work

Do not assume that a model name in an environment variable is supported forever. Do not copy a configuration example from a different version without checking the current documentation. Do not commit a personal model preference to shared project settings unless the team agrees that it should be the default.

Avoid changing several variables at once. If you update the tool, change a model and edit project instructions in one step, it becomes harder to identify what fixed or caused the problem. Change one thing, run a small test and record the outcome.

A model switch is also not a substitute for testing. A response can sound more confident while still being wrong. Review code changes, run tests, check permissions and verify any external behavior that matters to the application.

Safety and Limitations

Claude Code may read files and use tools within the permissions granted to it. Model selection does not replace repository safety rules. Keep secrets out of prompts, review commands before allowing them to run, and avoid giving broad write access when a narrow task only needs read access. Use a clean branch or working tree for experiments that may modify files.

The official model configuration and overview pages should be checked for current command syntax and access rules. This article does not claim that the current UI was tested during this run. Because live documentation was not accessible under the repository only restriction, the command example is qualified and no current model prices or access promises are made.

Key Takeaways

• Use the selector or documented command supported by your installed version.
• Know whether the change affects one session or a saved configuration.
• Test the result and review code before trusting a model switch to solve a problem.

Related Reading

For a broader workflow, see How to update Claude Code and How to use Claude Code for QA automation.

FAQ

How do I change the model in Claude Code?

Use the model selector or supported model command documented for your installed version. The /model command has been used for selection, but verify current behavior in official documentation.

Does changing the model affect every project?

Not always. A session choice may be temporary, while user or project settings can persist. Check the documented scope before saving a change.

Can I choose any Claude model in Claude Code?

No. Available models can depend on account access, plan, region, version and provider settings. Use the options available in your current installation.

Will changing the model make Claude Code cheaper?

Not necessarily. Billing depends on the selected model, actual usage and your subscription or API arrangement. Check current official billing information.

Why is a model missing from the selector?

It may not be available to your account or version. Check access, update information and the current model configuration guide.

Should I change models during a coding task?

You can if the workflow supports it, but review the subsequent changes and keep tests passing. Avoid switching several variables at once when debugging.

Is changing the model enough to improve code quality?

No. Clear requirements, a small diff, tests and human review remain essential regardless of the model selected.