🌐
OpenAI
platform.openai.com › docs › guides › prompt-optimizer
Prompt optimizer | OpenAI API
The prompt optimizer is a chat interface in the dashboard, where you enter a prompt, and we optimize it according to current best practices before returning it to you.
🌐
OpenAI Cookbook
cookbook.openai.com › examples › gpt-5 › prompt-optimization-cookbook
GPT-5 Prompt Migration and Improvement Using the New Optimizer | OpenAI Cookbook
GPT-5 will benefit from all the traditional prompting best practices, but to make optimizations and migrations easier, we are introducing the GPT-5 Prompt Optimizer in our Playground to help users get started on improving existing prompts and migrating prompts for GPT-5 and other OpenAI models.
🌐
OpenAI
platform.openai.com › chat › edit
OpenAI's GPT-5 Prompt Optimizer
Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform.
🌐
OpenAI
platform.openai.com › chat › edit
GPT-5 Prompt Optimizer
Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform.
🌐
ChatGPT
chatgpt.com › g › g-4uKamI8cT-prompt-optimizer
ChatGPT - Prompt Optimizer
ChatGPT is your AI chatbot for everyday use. Chat with the most advanced AI to explore ideas, solve problems, and learn faster.
🌐
Rajeevpentyala
rajeevpentyala.com › 2025 › 09 › 08 › openai-prompt-optimizer-tool-write-better-prompts-faster
OpenAI “Prompt Optimizer” Tool | Write Better Prompts Faster
September 8, 2025 - Writing good prompts can be tricky, but OpenAI just made it easier with their Prompt Optimizer tool. This tool takes your draft prompts and suggests improvements to make them clearer, more effective, and tailored for better AI responses. It’s a great way to save time and get more out of every interaction with GPT-5. You just need a free ...
🌐
Reddit
reddit.com › r/openai › i've created a free prompt optimizer for gpt and claude
r/OpenAI on Reddit: I've created a free Prompt Optimizer for GPT and Claude
January 19, 2024 - OpenAI makes Sora, ChatGPT, and DALL·E 3. ... Sorry, something went wrong when loading this video. View in app ... Hey everybody! I've created a tool that takes a simple prompt (even just a sentence) and creates a highly optimized prompt, applying various best practices from Prompt Engineering. I've released for free on my app's website.
🌐
YouTube
youtube.com › watch
How to use the new OpenAI GPT5 Prompt Optimizer: Step by step tutorial - YouTube
Learn how to optimize your prompts with the GPT5 prompt optimizer 👉 Check out my channel for free GenAI applications: ⁨@GenAI_Nerd_Channel⁩ In this #tutori...
Published   August 10, 2025
Find elsewhere
🌐
OpenAI Cookbook
cookbook.openai.com › examples › optimize_prompts
Optimize Prompts | OpenAI Cookbook
The optimization process uses a multi-agent approach with specialized AI agents collaborating to analyze and rewrite prompts. The system automatically identifies and addresses several types of common issues: ... Objective: This cookbook demonstrates best practices for using Agents SDK together with Evals to build an early version of OpenAI's prompt optimization system.
🌐
Eden AI
edenai.co › post › top-free-prompt-optimization-tools-apis-and-open-source-models
Top Free Prompt Optimization tools, APIs, and Open Source models | Eden AI
Here is the list of the best Prompt Optimization Open Source Models: ... The Azure OpenAI Prompt Optimization Tool is an easy-to-use Python program that employs OpenAI's GPT-3 technology and tkinter graphical ...
🌐
Reddit
reddit.com › r/thinkingdeeplyai › openai just dropped a free prompt optimizer tool for chatgpt 5 and it’s legit
r/ThinkingDeeplyAI on Reddit: OpenAI just dropped a free Prompt Optimizer Tool for ChatGPT 5 and it’s legit
August 11, 2025 -

It refactors your prompt to remove contradictions, tighten format rules, and align with GPT-5’s behavior. The official GPT-5 prompting guide explicitly recommends testing prompts in the optimizer, and the cookbook shows how to iterate and even save the result as a reusable Prompt Object.

Link (Optimizer):
https://platform.openai.com/chat/edit?models=gpt-5&optimize=true OpenAI Platform

More from OpenAI on why/when to use it: GPT-5 prompting guide + optimization cookbook. OpenAI Cookbook

Why this matters

  • GPT-5 is highly steerable, but contradictory or vague instructions waste reasoning tokens and degrade results. The optimizer flags and fixes these failure modes.

  • You can version and re-use prompts by saving them as Prompt Objects for your apps.

10-minute workflow that works

  1. Paste your current prompt into the optimizer and click Optimize. It will propose edits and explain why.

  2. Resolve contradictions (e.g., tool rules vs. “be fast” vs. “be exhaustive”), and add explicit output formatting.

  3. Set reasoning effort to match the task (minimal/medium/high) to balance speed vs. depth.

  4. Add a brief plan → execute → review loop inside the prompt for longer tasks.

  5. Save as a Prompt Object and reuse across chats/API; track versions as you iterate.

Copy-paste mini-template (drop into the optimizer)

pgsqlCopyEditPurpose — Goal + "Done" + allowed tools. Reasoning_effort: <minimal|medium|high>.
Role — Persona + strict tool rules; ask questions only if critical.
Order of Action — Plan → Execute → Review; end with a short “Done” checklist.
Format — Markdown sections, bullets, tables/code; target length; restate every 3–5 turns.
Personality — Tone (confident/precise), verbosity (short/medium/long), jargon level.
Controls — Max lookups <n>; if tools fail, retry once then proceed with labeled assumptions.

(The GPT-5 guide notes verbosity and reasoning controls; use them deliberately.) OpenAI Cookbook

Best practices with GPT-5 + the optimizer

  • Kill contradictions first. The optimizer is great at spotting conflicting instructions—fix them before anything else.

  • Right-size “reasoning_effort.” Use minimal for latency-sensitive work, high for complex multi-step tasks.

  • Constrain the format. Specify headings, bullet lists, and tables; remind the model every 3–5 turns to maintain structure.

  • Plan before doing. Prompted planning matters more when reasoning tokens are limited.

  • Use the Responses API for agentic flows to persist reasoning across tool calls.

  • Version your prompts. Save the optimized result as a Prompt Object so your team can reuse and compare.

  • Add lightweight evals. Pair the optimizer with Evals/“LLM-as-judge” to measure real improvements and regressions.

  • Tune verbosity. Use the new verbosity control (or natural-language overrides) to match audience and channel.

What to watch out for

  • Don’t over-optimize into rigidity—leave room for the model to choose smart tactics.

Quick start

  1. Open the optimizer → paste your prompt → Optimize.

  2. Apply edits → add plan/format/controls → Save as Prompt Object.

  3. Test with a few real tasks → track results (evals or simple checklists) → iterate.

If you need some prompt inspiration you can check out all my best prompts for free at Prompt Magic

🌐
OpenAI Developer Community
community.openai.com › prompting
FYI - Prompt optimization guide and tool - Prompting - OpenAI Developer Community
August 8, 2025 - For those looking to optimize their prompts read the GPT-5 prompting guide and be sure to check out the prompt optimizer tool.
🌐
PromptPerfect
promptperfect.jina.ai
PromptPerfect - AI Prompt Generator and Optimizer
Unlock prompt optimization for models like GPT-4, ChatGPT and Midjourney. Generate and refine prompts to perfection, receiving improved outcomes in seconds.
🌐
DocsBot AI
docsbot.ai › tools › prompt › chatgpt-prompt-generator
Free ChatGPT Prompt Generator & Optimizer | No Login | OpenAI GPT
Create powerful, optimized prompts for ChatGPT with our free AI Prompt Generator. No sign-up needed. Generate amazing system prompts and instructions for OpenAI's ChatGPT instantly.
🌐
Medium
medium.com › @markchen69 › stop-polishing-your-prompts-let-the-prompt-optimizer-do-the-heavy-lifting-4807f03c2e79
Stop polishing your prompts — let the Prompt Optimizer do the heavy lifting | by Mark Chen | Medium
September 24, 2025 - How to use OpenAI’s “Optimize for GPT-5” tool to turn sloppy prompts into reliable instructions (with a worked example you can copy-paste).
🌐
ZeroGPT
zerogpt.plus › en › openai-prompt-optimizer-ai
Free OpenAI Prompt Optimizer | GPT Prompt Engineering Tool | ZeroGPT Plus
Professional OpenAI prompt optimizer for GPT models. Transform basic ideas into structured, effective prompts. Free tool with best practices for ChatGPT, GPT-4, and DALL-E.
🌐
DATAN3RD
datan3rd.com › prompt-optimizer
System Prompt Optimizer – Free AI Prompt Tool from DATAN3RD - DATAN3RD
Are you building an AI product or solution and having trouble adjusting your system prompt to give you reliable results? The DATAN3RD Prompt Optimizer is a free, browser-based tool that helps you refine system prompts for OpenAI models. Paste your prompt, run a quick test with your own OpenAI API…
🌐
Reddit
reddit.com › r/chatgptpro › openai just released a prompt optimizer for gpt5
r/ChatGPTPro on Reddit: OpenAI Just released a Prompt Optimizer for GPT5
August 11, 2025 -

OpenAI released a Prompt Optimizer for ChatGPT-5. You paste your prompt, choose a goal (accuracy, speed, brevity, creativity, safety), and it rewrites the prompt into a clean template with role, task, rules, and output format. It also lets you A/B test the original vs the optimized version and save the result as a reusable Prompt Object.

Links

  • Optimizer: https://platform.openai.com/chat/edit?models=gpt-5&optimize=true

How to use

  • Paste your prompt → click Optimize.

  • Remove conflicts, set reasoning level (low/medium/high), define output format.

  • Save as a Prompt Object and reuse it. Run the A/B test and keep the winner.

Quick templates

  • Study: Explain [topic]. Output: overview, 3 key points, example, 3‑line summary. Include sources.

  • Code: Fix this [language] snippet. Output code only with 3 comments explaining changes.

  • Research: Summarize links into 5 insights, 2 limits, 1 open question, plus 3 refs.

  • Data: Convert text to strict JSON array with fields X/Y/Z; drop incomplete rows.

Tips

  • Fix contradictions first.

  • Be explicit about structure and length.

  • Match reasoning level to task complexity.

  • Version prompts and track improvements with the A/B tool.

🌐
Reddit
reddit.com › r/chatgptpromptgenius › stop wasting tokens: gpt‑5’s new prompt optimizer fixes your prompt in 30 seconds
r/ChatGPTPromptGenius on Reddit: Stop wasting tokens: GPT‑5’s new Prompt Optimizer fixes your prompt in 30 seconds
August 11, 2025 -

OpenAI just shipped a free Prompt Optimizer for ChatGPT 5 and it’s the rare tool that actually saves time. Paste your chaos prompt. Pick what you care about (accuracy, speed, brevity, creativity, safety). Boom—clean, structured prompt with role, constraints, and exact output format. It even lets you A/B your original vs the optimized version so you can keep receipts.

Grab it

  • Optimizer: https://platform.openai.com/chat/edit?models=gpt-5&optimize=true

Why this slaps

  • Kills contradictions (“be brief” + “explain every step”) that tank results.

  • Adds clear sections: Role → Task → Constraints → Output → Checks.

  • Reasoning slider so you don’t burn tokens on easy tasks.

  • Save as a Prompt Object and reuse anywhere—share with friends or your team.

60‑second recipe

  • Paste your prompt → Optimize.

  • Pick Accuracy (or Brevity if you hate fluff).

  • Specify format: headings, code blocks, tables, or strict JSON.

  • Run A/B on two real tasks → keep the winner → save as preset.

Plug‑and‑play starters

  • Tutor: “Teach [topic]. Output: overview, 3 key ideas, example, 3‑line TL;DR. Cite sources.”

  • Debug: “Fix this [language] code. Return code only with 3 inline comments.”

  • Research: “Summarize links into 5 insights, 2 caveats, 1 open question + 3 references.”

  • Data: “Convert text to strict JSON array (fields X/Y/Z). Drop incomplete rows. No prose.”

Pro tips

  • Be explicit. Structure beats vibes.

  • Match reasoning to difficulty (low = fast, high = deep).

  • Version your prompts and track wins with the A/B tool.