Imp is listed as Open Source. Check https://github.com/deepfates/imp for the current plan limits, as vendors change pricing frequently.

What is Imp best for?

Imp is commonly used for Elixir, DSPy, LM programs. It supports English.

Imp

Q: What is Imp?

Imp is a code AI tool listed on Use AI Tools. Imp is a full port of DSPy to the BEAM. You describe what each language-model step takes and returns, choose how it thinks, and let an optimizer improve the program against examples of what good looks like, giving you signatures, modules, optimizers, agent loops and retrieval with the concurrency and reliability of OTP.

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ElixirDSPyLM programs

Open SourceEnglish

Imp is a full port of DSPy to the BEAM. You describe what each language-model step takes and returns, choose how it thinks, and let an optimizer improve the program against examples of what good looks like, giving you signatures, modules, optimizers, agent loops and retrieval with the concurrency and reliability of OTP.

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Community Rating

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🎯 Real-World Use Cases

Write declarative LM programs

Describe inputs and outputs per step rather than hand-writing prompts.

Optimize against examples

Let an optimizer tune the program using examples of good output.

Run it on OTP

Get agent loops and retrieval supervised by the BEAM runtime.

⚖️ Honest Review

✅ Pros

+Brings the DSPy programming model to Elixir and Erlang teams
+Concurrency and supervision come from OTP rather than bolted-on plumbing
+Optimizers mean less manual prompt tuning

⚠️ Cons

−Requires Elixir and willingness to think in signatures
−Smaller ecosystem than the Python original

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