Use OpenAI GPT-4o Without Paying $20/Month for ChatGPT Plus
OpenAI's versatile omni-model with vision, PDF document analysis, and fast instruction following—5 credits per prompt, with credits that never expire.
Why run GPT-4o on Unlocked AI?
OpenAI's GPT-4o ('omni') combines frontier intelligence with multimodal vision and document understanding. On Unlocked AI, you can use GPT-4o alongside Claude Sonnet 5.5, Gemini 2.5 Pro, and DeepSeek R1 inside a single conversation thread—paying only 5 credits per prompt from a non-expiring $5 pass.
Start your conversation with GPT-4o and switch to Claude Sonnet 5.5, GPT-4o, Gemini 2.5 Pro, or DeepSeek R1 in the exact same chat thread without losing context.
GPT-4o Key Capabilities
- Fast, reliable multimodal understanding across text, code, images, and PDFs
- Switch seamlessly between GPT-4o and Claude or Gemini mid-conversation
- 100 prompts per $5 Starter Pass (500 credits) with zero monthly expiration
- Automatic companion routing to ChatGPT Image (GPT-5) when you ask for an image
GPT-4o Pay-As-You-Go Pricing vs. ChatGPT Plus
One-time passes never expire. Pay only for the prompts you actually run.
Best Use Cases for GPT-4o
All-Round Research & Brainstorming
Synthesize complex topics, compare strategies, and generate structured tables or JSON outputs.
Spreadsheet, Chart & Vision Analysis
Upload charts, diagrams, or PDFs for instant summarization and data extraction.
Cross-Checking Other AI Models
Start a chat with Claude Sonnet 5.5 and switch to GPT-4o in the same thread to get a second opinion.
Frequently Asked Questions About GPT-4o
How can I use GPT-4o without a monthly subscription?
On Unlocked AI, you can use GPT-4o by OpenAI with one-time credit passes starting at $5 (500 credits). There is no mandatory monthly subscription, and purchased pass credits never expire.
How many GPT-4o prompts do I get for $5?
GPT-4o costs 5 credits per prompt. A $5 Starter Pass (500 credits) gives you 100 prompts, a $10 Pro Pass (1,200 credits) gives you 240 prompts, and a $25 Power Pass (3,500 credits) gives you 700 prompts.
Can I try GPT-4o for free first?
Yes. Every new verified account on Unlocked AI receives 20 free starter credits with no credit card required—enough for 4 free GPT-4o prompts.
Is GPT-4o also included in the $19.99/mo All-Access Membership?
Yes. Heavy daily users can optionally subscribe to the $19.99/month All-Access Membership, which includes 2,500 monthly credits usable on GPT-4o and all 11 other AI models in our studio.