Free Prompt Eng. AI tiers and credits

Compare source-backed free offers from AI providers in Prompt Eng.. Records show available allowance details, conditions, official evidence, and review dates.

8 providers · source-backed records with verification dates

View the ranked Prompt Eng. comparison

Braintrust

Braintrust provides AI gateway, observability, evaluation, and prompt tooling.

$10 credit/mo + 1 GB/mo

Evaluation Observability Inference Prompt Eng.

Active · verified 2026-07-17

Confident AI / DeepEval

Confident AI / DeepEval provides LLM evaluation/testing and observability.

Free tier

Evaluation Observability RAG Prompt Eng.

Active · verified 2026-07-17

Helicone

Helicone provides LLM observability, gateway, caching, and prompt/evaluation tooling.

10K requests/mo

Evaluation Observability RAG Inference

Active · verified 2026-07-17

Langfuse

Langfuse provides LLM evaluation, tracing, observability, and prompt management.

50K units/mo

Evaluation Observability Inference Prompt Eng.

Active · verified 2026-07-17

Maxim AI

Maxim AI provides agent evaluation, observability, and prompt management.

10K logs/mo

Evaluation Observability Agents Prompt Eng.

Active · verified 2026-07-17

Parea AI

Parea AI provides AI evaluation, observability, human review, and prompt management.

3K logs/mo

Evaluation Observability Prompt Eng.

Active · verified 2026-07-17

Portkey

Portkey provides AI gateway, observability, prompt management, and guardrails.

10K logs/mo

Observability Inference Prompt Eng.

Active · verified 2026-07-17

Traceloop

Traceloop provides LLM/agent observability and evaluation.

50K spans/mo

Evaluation Observability Agents Prompt Eng.

Active · verified 2026-07-17