JetBrains Mellum

Mellum by JetBrains excels in the Coding category, where it ranks #376 with a composite score of 22/100. JetBrains' proprietary code completion model integrated into IntelliJ-based IDEs. Focused on fast, context-aware code completions across 4+ languages. It is particularly strong in areas highlighted by its top benchmark performance and adoption metrics, making it suitable for both individual developers and enterprise teams looking for a reliable coding solution.

Mellum is priced at $0.00 per million input tokens and $0.00 per million output tokens (USD). Contact the provider for volume discounts and enterprise pricing. Pricing is competitive within the coding category and reflects the model's quality-to-cost ratio.

In the Coding category, Mellum holds rank #376 out of 378 models tracked. Its quality rank is #376 and adoption rank is #376. You can use our comparison tool at /compare to see detailed side-by-side metrics with specific alternatives. Key differentiators include its composite scoring across benchmarks, community sentiment, and real-world adoption rates.

Mellum has been evaluated across 5 different signals. Its strongest areas include Capabilities (17/100), Pricing (100/100), Context Window (0/100). These scores are derived from industry-standard benchmarks, community ratings, and real-world performance metrics. The composite score of 22/100 reflects a weighted combination of all tracked signals.

Mellum is available as a free, open-source model. You can run it locally or use it through various hosting providers. Some API providers may charge for hosted inference, so check individual provider pricing.

Mellum supports streaming responses. These capabilities determine which workflows and integrations the model can handle natively.

Mellum was developed by JetBrains. It was released on June 1, 2025. You can access it through JetBrains's API. Check our provider page for all models from JetBrains and how they compare against each other.

Pick Mellum when you need a budget-friendly option for high-volume, simpler tasks where you prioritize cost over peak performance. If your task is straightforward text completion or classification, a cheaper model might give you 90% of the quality at a fraction of the price. Run a quick benchmark on your actual use case before committing.

You can access Mellum through JetBrains's API using standard HTTP requests or their official SDK. Most providers support OpenAI-compatible endpoints, so switching between models often requires changing just the model name in your API call. Streaming is supported for real-time token-by-token output. For production use, implement proper error handling, rate limiting, and cost monitoring.