temper-ai/Temper-1-1.5B

TEXT GENERATIONPricing:Input $0.04 / Cached $0.008 / Output $0.08Concurrent Unit Cost:1Model Size:1.5BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Oct 7, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

Temper-1-1.5B is a 1.5 billion parameter language model developed by temper-ai, fine-tuned from Qwen2.5-Coder-1.5B-Instruct specifically for generating Rust code. It achieves a 50.5% pass@1 score on the HumanEval-Rust benchmark, outperforming larger models like Qwen2.5-Coder-3B. This model excels at Rust code generation, making it suitable for developers working on Rust-specific programming tasks.

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Temper-1-1.5B: Optimized Rust Code Generation

Temper-1-1.5B is a 1.5 billion parameter model from temper-ai, specifically fine-tuned from Qwen2.5-Coder-1.5B-Instruct for generating Rust code. It demonstrates strong performance on Rust programming tasks, notably achieving a 50.5% pass@1 score on the HumanEval-Rust benchmark. This score surpasses that of the larger Qwen2.5-Coder-3B model, highlighting its efficiency and specialization in Rust.

Key Capabilities

  • High-Performance Rust Code Generation: Excels at solving Rust programming problems, as evidenced by its HumanEval-Rust benchmark results.
  • Efficient Size: Delivers competitive performance for Rust tasks at a compact 1.5 billion parameters.
  • Specialized Training: Trained on 10,000 Rust examples, ensuring high relevance and accuracy for Rust-specific queries.

Good For

  • Rust Developers: Ideal for generating Rust functions and solving coding challenges in Rust.
  • Code Completion and Assistance: Useful for tasks requiring accurate Rust code snippets.
  • Resource-Constrained Environments: Its smaller size makes it suitable for deployment where computational resources are a consideration, while still offering strong Rust capabilities.

Limitations

While highly capable in Rust, the model is primarily trained on English requests for Rust tasks. It may provide made-up answers or refusals for non-Rust related questions or requests in other languages. It is not designed for fill-in-the-middle code completion or tasks involving async code and web frameworks.