selfgpt

selfgpt is an experimental tool that uses language models in reverse to simulate human user messages in chat conversations.

Selfgpt explores reversing chat templates so language models generate user messages instead of assistant responses. It features a native mode using reversed chat templates and a roleplay configuration asking models to act human. An evaluation system uses GPT 6 Astra as a judge to determine whether a human or the AI wrote a specific message. Results show that Mistral Small is the most effective model in practice, while roleplay configurations perform poorly. The project highlights model performance rankings and conversation evaluations without using fine-tuning.

selfgpt at a glance

Best for: Software engineer
Runs on: Web
Pricing: Free
Released: October 2026
Category: AI chat assistant
Website: selfgpt.pages.dev

Key features

Reverses chat templates to generate user messages
Provides a native mode using reversed templates
Includes a roleplay configuration
Evaluates models using an automated judge
Ranks models based on how often they fool the judge
Allows users to test being the judge

Use it for

Testing language model abilities to simulate human users
Evaluating chat models in reverse conversation roles
Ranking models based on human-like message generation

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