Logo

Local LLMs for Coding: Choose Around Your Task

The best local LLM for coding depends on what you want it to do. Explaining a function, completing code inside an editor, and changing several files through a coding agent are different jobs.

Start with the task, then check the exact model download and the software connecting it to your code.

Qwen2.5-Coder 7B, Qwen3-Coder 30B, and Devstral 24B provide three useful examples to investigate. They are not a tested ranking or a claim about the strongest models available. This guide draws on model documentation and evaluation research, not hands-on Chagto benchmarks.

Start With the Coding Task

For a short explanation or repair, you can supply code and inspect the response. Editor completion needs an integration that sends the appropriate context. Repository-level work adds tools, permissions, and changes you must review.

Distinguish these workflows before choosing:

  • Generate, explain, or repair code: evaluate whether the answer follows the requirements and works on relevant inputs.

  • Complete code in an editor: check the integration, response time, and support for its completion format, including fill-in-the-middle where required.

  • Change an existing repository: check how the connected agent finds files, proposes edits, runs commands, and reports results.

A model is not itself an editor integration or an agent with permission to change files. Its usefulness depends partly on the surrounding software.


Compare Three Local Coding-Model Examples

These examples illustrate different starting points. Their intended roles overlap; a larger or agent-focused model is not automatically the better choice for every task.

Model exampleWhy consider itOllama tag checkedImportant check
Qwen2.5-Coder 7BSmaller code-focused starting point for generation, explanation, and repair.qwen2.5-coder:7bDo not attribute 32B benchmark results to the 7B variant.
Qwen3-Coder 30BLarger mixture-of-experts candidate for tool-connected coding.qwen3-coder:30bActivated parameters do not represent the total weights or memory requirement.
Devstral 24BSoftware-engineering-agent candidate for repository work.devstral:24bCheck the agent scaffold and exact release; benchmark results are configuration-specific.

The tags identify the library entries reviewed for this guide. Before downloading, check their current details and the requirements of your chosen runtime.


Qwen2.5-Coder 7B: A Smaller Starting Point

The Qwen2.5-Coder library page describes a code-focused family covering generation, reasoning, and repair.

The 7B variant is a reasonable first candidate to evaluate for bounded tasks: explain a function, propose a repair, or generate a small piece of code you can test.

Be careful with the evidence on the page. Much of its benchmark discussion concerns the 32B model, not the 7B download. Those results do not establish equivalent performance for the smaller variant.

If your goal is editor completion rather than conversational help, separately verify the model variant, prompt format, and editor support. A code-focused name alone does not establish a working completion setup.


Qwen3-Coder 30B: Consider the Whole Configuration

The Qwen3-Coder 30B entry presents it as a model for coding and agentic tasks. It uses a mixture-of-experts architecture, with approximately 30B total parameters and 3.3B activated.

That distinction does not make it equivalent to a 3.3B model download. Activated parameters describe part of the computation, not the total weights you need to accommodate.

Consider this example when you want to evaluate a larger model in a connected coding workflow. Confirm that the application supports the required tool interactions and that the chosen configuration works on your machine.

Do not treat an advertised long context window as proof that your local setup can use that entire window comfortably.


Devstral 24B: Evaluate It With the Agent

The Devstral 24B entry describes a software-engineering model developed by Mistral AI and All Hands AI, with an emphasis on tool use and codebase changes.

It is an example to investigate when repository work is the goal—not simply another model to rank by how well it answers a short coding question.

Its published benchmark discussion includes an agent scaffold: the surrounding software that supplies tools and manages the interaction. That matters when interpreting results.

Loading the model into a chat window does not recreate the evaluated agent configuration. Check the exact release, connected application, tool support, and permissions before expecting comparable behaviour.

Check the Download and Connection

Model size, quantization, context settings, and runtime affect practical suitability. Download size is not a minimum-memory guarantee.

For the general checks, see how to check the exact model version and download.

For coding, add three questions:

  • Does my editor or agent support this model and connection?

  • Does it support the completion format or tool calls the workflow requires?

  • Which actions can the application take without further approval?

If you still need a runner, compare LM Studio vs Ollama around that connection rather than choosing the model and application independently.


Explore the Model Listings

Explore the three listings below, then confirm the exact download and connected-tool requirements in the linked documentation.

Evaluate Code Beyond the Explanation

A convincing explanation is not evidence that the code works.

The peer-reviewed EvalPlus study, published at NeurIPS 2023, expanded benchmark tests and exposed incorrect generated code that the original tests had missed. It also found that stronger testing could change model rankings.

That supports a practical habit: test more than the example supplied in the prompt.

Repository work is a separate challenge. SWE-bench, published at ICLR 2024, evaluates changes addressing real GitHub issues, including work spanning functions and files. A function-level benchmark does not establish that an agent will reliably modify your project.

Neither study ranks the three local configurations discussed here.


Try One Small, Checkable Task

Use this suggested exercise—not as a Chagto benchmark, but as a way to compare candidates:

  1. Choose a non-sensitive function or disposable repository.

  2. Define expected behaviour and prepare tests before requesting a solution.

  3. Give each candidate the same task and relevant context.

  4. Check normal inputs, edge cases, and failure conditions.

  5. Inspect invented APIs, unnecessary edits, and new dependencies.

  6. Record the time needed to reach a usable result, including corrections.

For agents, review permissions, commands, and file changes before accepting them. Use an isolated environment without credentials or valuable files when executing unfamiliar generated code.

Start with the smallest setup that completes your actual task reliably enough to be useful. Expand only when you can identify what the current setup cannot do.

Browse AI assistants and models in the directory.

browse all AI guides →

© Chagto 2026. All rights reserved