Best AI Prompt Generators in 2026
Updated
In short: Vellum is ranked #1 of 29 as of 4 October 2026, ahead of Agenta and Promptic. The best-ranked option with a free plan is Agenta. The lowest first paid tier on this page is VantagePrompt at $3/mo.
Choosing an AI prompt generator starts with how you create, refine, and reuse prompts for the models you work with. Compare model support and optimization mode, then look at prompt testing, variables, and template limits to see which features fit your process. API access and team collaboration are relevant when prompts need to connect with other tools or shared workflows. The ranking opens with Agenta, ProofHound, and PromptLayer, with MLflow Prompt Optimization and PromptEval among the next entries. Free-plan availability and the paid-from price provide additional points of comparison. Consider which capabilities matter most for your prompt work and compare the entries against those needs.
29 AI prompt generators ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 Vellum iPhone + Android RecognisedPhone appDocumentedFree plan 7.8$30/mo
- 2 Agenta No phone app RecognisedPhone appDocumentedFree plan 6.4$29/mo
- 3 Promptic No phone app RecognisedPhone appDocumentedFree plan 6.4€149/mo Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 4 Promptitude No phone app RecognisedPhone appDocumentedFree plan 6.4$39/mo Model support: multipleOptimization mode: assistedPrompt variables: Yes
- 5 Promptotype No phone app RecognisedPhone appDocumentedFree plan 6.4$6/mo Model support: multipleOptimization mode: assistedPrompt variables: Yes
- 6 PromptWizard No phone app RecognisedPhone appDocumentedFree plan 6.4Free Model support: multipleOptimization mode: automated
- 7 VantagePrompt No phone app RecognisedPhone appDocumentedFree plan 6.4$3/mo Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 8 Google Cloud Agent Evaluation No phone app RecognisedPhone appDocumentedFree plan 6.3 Model support: customOptimization mode: automated
- 9 Latitude No phone app RecognisedPhone appDocumentedFree plan 6.3$99/mo Model support: multiple
- 10 MLflow Prompt Optimization No phone app RecognisedPhone appDocumentedFree plan 6.3Free Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 11 PromptEval No phone app RecognisedPhone appDocumentedFree plan 6.3$9/mo Model support: singleOptimization mode: assisted
- 12 PromptLayer No phone app RecognisedPhone appDocumentedFree plan 6.3$49/mo
- 13 ProofHound No phone app RecognisedPhone appDocumentedFree plan 6.2$29/mo
- 14 Amazon Bedrock Prompt Management No phone app RecognisedPhone appDocumentedFree plan 5.4 Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 15 Amazon Nova ReelAmazon Web Services No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 16 ChainForge No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: customOptimization mode: manualPrompt variables: Yes
- 17 DSPy No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 18 OpenPrompt No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: assistedPrompt variables: Yes
- 19 Prompt Engine No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: assistedPrompt variables: Yes
- 20 PromptForge No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multiple
- 21 Promptimal No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: singleOptimization mode: automated
- 22 PromptPex No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 23 TextGrad No phone app RecognisedPhone appDocumentedFree plan 5.3 Model support: multipleOptimization mode: automatedPrompt variables: Yes
- 24 GEPA No phone app RecognisedPhone appDocumentedFree plan 5.2 Model support: multipleOptimization mode: automated
- 25 PromptPerfect No phone app RecognisedPhone appDocumentedFree plan 5.2 Model support: multipleOptimization mode: automated
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI prompt generator is ranked first on Samsung Mobile US Press?
Vellum is ranked #1 of 29 with a score of 7.8. Agenta is second and Promptic third.
How many of these have a free plan?
12 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, VantagePrompt has the lowest first paid tier we found: $3/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.