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Code Suggestions (FREE ALL)

Write code more efficiently by using generative AI to suggest code while you're developing.

With GitLab Duo Code Suggestions, you get:

  • Code Completion, which suggests completions to the current line you are typing. These suggestions are usually low latency.
  • Code Generation, which generates code based on a natural language code comment block. Write a comment like # Type more here to generate the appropriate code, based on the context of your comment and the rest of your code.
    • Algorithms or large code blocks may take more than 10 seconds to generate.
    • Streaming of code generation responses is supported in VS Code, leading to faster average response times. Other supported IDEs offer slower response times and will return the generated code in a single block.

Start using Code Suggestions

GitLab Duo Code Suggestions are available:

  • In the Premium and Ultimate tier for self-managed, and across all tiers for SaaS. View these pages to get started.
  • In VS Code, Microsoft Visual Studio, JetBrains IDEs, and Neovim. You must have the corresponding GitLab extension installed.
  • In the GitLab Web IDE.

Code Suggestions is available and free to use until February 15, 2024:

Supported languages

Code Suggestions support is a function of the:

  • Underlying large language model.
  • IDE used.
  • Extension or plug-in support in the IDE.

For languages not listed in the following table, Code Suggestions might not function as expected.

Supported languages in IDEs

Code Suggestions is aware of common popular programming concepts and infrastructure-as-code interfaces, like Kubernetes Resource Model (KRM), Google Cloud CLI, and Terraform.

The editor supports these languages:

Language VS Code JetBrains IDEs Visual Studio Neovim
C++ {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
C# {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Go {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Google SQL {dotted-circle} No {check-circle} Yes {check-circle} Yes {check-circle} Yes
Java {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
JavaScript {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Kotlin {check-circle} Yes (Requires third-party extension providing Kotlin support) {check-circle} Yes {check-circle} Yes {check-circle} Yes
PHP {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Python {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Ruby {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Rust {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Scala {check-circle} Yes (Requires third-party extension providing Scala support) {check-circle} Yes {check-circle} Yes {check-circle} Yes
Swift {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
TypeScript {check-circle} Yes {check-circle} Yes {check-circle} Yes {check-circle} Yes
Terraform {check-circle} Yes (Requires third-party extension providing Terraform support) {check-circle} Yes {dotted-circle} No {check-circle} Yes (Requires third-party extension providing the terraform file type)

NOTE: Some languages are not supported in all JetBrains IDEs, or may require additional plugin support. Refer to the JetBrains documentation for specifics on your IDE.

Supported editor extensions

Code Suggestions supports a variety of popular editors including:

A GitLab Language Server is used in VS Code, Visual Studio, and Neovim. The Language Server supports faster iteration across more platforms. Users can also configure it to support Code Suggestions in IDEs where GitLab doesn't provide official support.

Code Suggestions data usage

Code Suggestions is powered by a generative AI model.

Your personal access token enables a secure API connection to or to your GitLab instance. This API connection securely transmits a context window from your IDE/editor to the GitLab AI Gateway, a GitLab hosted service. The gateway calls the large language model APIs, and then the generated suggestion is transmitted back to your IDE/editor.

GitLab selects the best-in-class large-language models for specific tasks. We use Google Vertex AI Code Models and Anthropic Claude for Code Suggestions.

View data retention policies.


For self-managed instances that have enabled Code Suggestions and SaaS accounts, we collect aggregated or de-identified first-party usage data through our Snowplow collector. This usage data includes the following metrics:

  • Language the code suggestion was in (for example, Python)
  • Editor being used (for example, VS Code)
  • Number of suggestions shown, accepted, rejected, or that had errors
  • Duration of time that a suggestion was shown
  • Prompt and suffix lengths
  • Model used
  • Number of unique users
  • Number of unique instances

Inference window context

Code Suggestions inferences against the currently opened file, the content before and after the cursor, the file name, and the extension type. For more information on possible future context expansion to improve the quality of suggestions, see epic 11669.

Training data

GitLab does not train generative AI models based on private (non-public) data. The vendors we work with also do not train models based on private data.

For more information on GitLab Code Suggestions data sub-processors, see:

Known limitations

We are continuing to work on the accuracy of overall generated content. However, Code Suggestions may generate suggestions that are:

  • Irrelevant.
  • Incomplete.
  • Results in failed pipelines.
  • Potentially insecure.
  • Offensive or insensitive.

When using Code Suggestions, code review best practice still applies.

Let us know if you have feedback.

Progressive enhancement

This feature is designed as a progressive enhancement to developer's IDEs. Code Suggestions offer a completion if a suitable recommendation is provided to the user in a timely matter. In the event of a connection issue or model inference failure, the feature gracefully degrades. Code Suggestions do not prevent you from writing code in your IDE.


Let us know about your Code Suggestions experience in issue 435783.


Disable Code Suggestions

Individual users can disable Code Suggestions by disabling the feature in their installed IDE editor extension.