Find a tool

OpenAI to Gemini Prompt Converter Runs in your browser. No input data is sent to our server.

Paste an OpenAI Messages payload, convert it into Gemini contents format, and reuse the result in Google AI workflows. This page is useful for converting OpenAI or ChatGPT-style prompt templates into Gemini-ready payloads for cross-provider prompt testing.

Converted template JSON

Paste content and run the tool instantly.

This tool runs in your browser so you can reshape provider-specific prompt templates, inspect the converted payload, and reuse it in another AI stack without sending drafts to a remote processing service.

Convert OpenAI Prompts to Gemini Format

Convert OpenAI message templates into Gemini contents format for Google AI Studio, Vertex AI, ChatGPT-to-Gemini migrations, and multi-provider workflows. OpenAI uses a flat messages array with role and content fields; Gemini uses a contents array with parts and maps the assistant role to 'model' — this tool handles that structural conversion instantly.

How to use OpenAI to Gemini Prompt Converter

1

Paste content into the prompt template json panel.

2

Choose the source and target provider formats, then convert the template.

3

Copy or download the converted JSON, then test it in the destination provider workflow.

What this tool helps you do

Convert text-only prompt templates between major provider formats

Reduce manual JSON reshaping when switching LLM APIs

Keep system, user, and assistant turns aligned across providers

Copy or download the converted template

Why this helps in AI workflows

You built a prompt for OpenAI and need to move it into Anthropic.

A Gemini payload has to be mirrored in a multi-provider app.

You are testing a local Ollama model with a hosted provider prompt.

A team wants one base prompt template with provider-specific output shapes.

Which tool should you choose?

AI Prompt Template Converter: Choose this when you need to reshape a provider-specific chat payload into another provider's message format.

AI Prompt Formatter: Choose the formatter when the prompt text itself is messy and needs cleanup before conversion.

Common problems and fixes

My OpenAI prompt template breaks when I move it to another provider.

Convert the template into the target provider's message format instead of manually reshaping every field.

I need one prompt workflow to work across several model backends.

Use the converter to generate the closest provider-specific JSON template for each API.

Switching between hosted and local models keeps wasting time on payload formatting.

Convert the template first so your request body matches the expected message structure.

Related tools

AI Tools Hub AI Token Counter AI Cost Estimator AI Prompt Formatter JSON to TOON YAML to TOON CSV to TOON XML to TOON

More Prompt Template Converter Pages

AI Prompt Template Converter OpenAI to Anthropic Prompt Converter Anthropic to OpenAI Prompt Converter OpenAI to Ollama Prompt Converter

Related Guides

How to Convert OpenAI Message Payloads to Gemini Contents Why OpenAI, Anthropic, Gemini, and Ollama Prompt Formats Differ How to Reuse the Same Prompt Across ChatGPT, Claude, Gemini, and Ollama

Frequently asked questions

What does this AI prompt template converter do?

It converts text-based chat prompt templates between common provider request formats such as OpenAI Messages, Anthropic Messages, Gemini contents, and Ollama Chat, including common ChatGPT-style and Claude-style prompt workflows.

Will the converted template behave exactly the same on every provider?

Not always. Providers such as OpenAI, Anthropic, and Gemini differ in message semantics and advanced features, so this tool is best for text-only prompt templates rather than perfect behavioral parity between ChatGPT, Claude, and other model stacks.

Does it support multimodal parts or tool calls?

The current version is focused on text-only prompt templates. Payloads with images, tool calls, or other provider-specific advanced fields may need manual review.

Is this AI prompt template converter free?

Yes. It is free to use in your browser.