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Chat-O Brings You OpenAI’s OpenAI O1-Pro: Experience Groundbreaking AI with Secure BYOK Integration
We’re thrilled to announce that O1 Pro—OpenAI’s most advanced, powerful model yet—has landed on Chat-O! Now, thanks to our BYOK (Bring Your Own Key) functionality, you can unleash O1 Pro’s unparalleled capabilities within the Chat-O platform. But here’s the catch: this model is as premium as it gets, and it comes at a premium price. We’re talking $150 per 1 million input tokens and a whopping $600 per 1 million output tokens. While O1 Pro aims to deliver the absolute best conversational and generative experiences, we encourage you to tread carefully and budget accordingly.
This announcement was written by O1 Pro itself—see the screenshot here!
O1 Pro builds upon the success of past models and brings you:
O1 Pro was OpenAI’s first truly production-grade “reasoning” model, representing a paradigm shift from traditional LLMs. Unlike standard models that generate each token sequentially, O1 Pro could internally generate chains of thought — planning, verifying, and refining its reasoning before producing visible output.
This approach came with significant computational costs (reflected in the pricing), but delivered remarkable results:
| Capability | O1 Pro | GPT-4o | Improvement |
|---|---|---|---|
| AIME (Math Competition) | 74.4% | 12.2% | 6x improvement |
| GPQA (Graduate Science) | 73.3% | 53.6% | +20 points |
| Codeforces (Competitive Programming) | ~1800 rating | ~1200 rating | +600 rating |
| PhD-level Science (human eval) | 78% | 56% | +22 points |
The AIME result was particularly stunning — O1 Pro could solve extremely challenging math competition problems at nearly 75% accuracy, a level previously thought to require human expert mathematicians with years of training.
O1 Pro doesn’t just push the envelope—it shatters it. But premium power comes at a premium cost:
This pricing reflects O1 Pro’s state-of-the-art performance and advanced capabilities. We urge you to use it thoughtfully to make every token count.
A single complex problem-solving session could easily consume 20,000-50,000 tokens of reasoning (the model’s internal “thinking” tokens before generating a final answer). At $600/M output tokens, a deep analytical task might cost $10-30 per query. For budget-conscious users, we recommended using O1 Pro only for the hardest problems — the ones where cheaper models consistently fail.
O1 Pro was a watershed moment for AI reasoning capabilities. It directly inspired the reasoning architectures adopted by later models, including GLM-5.1, which integrated similar chain-of-thought mechanisms at a fraction of the cost.
The GPT-5.1 that launched in November 2025 inherited O1 Pro’s reasoning engine but made it dramatically more efficient — achieving comparable AIME scores (78%) at roughly 1/50th the cost per token. This efficiency gain came from architectural innovations in attention computation and speculative decoding that made deep reasoning economically viable for everyday use.
For users who need the absolute best reasoning quality without cost concerns, Kimi K3 and GLM-5.2 now offer superior performance to O1 Pro at significantly lower prices, demonstrating how rapidly the field has advanced.
Our BYOK option remains a secure and convenient way to integrate your OpenAI API keys with Chat-O. Simply bring your valid key, plug it into our platform, and unlock O1 Pro’s mind-blowing features in a controlled, private environment.
We’re rapidly inviting new enthusiasts to our closed beta program for Chat-O. Your feedback has been instrumental in refining the user experience and integrating advanced models effectively. Keep an eye on your inbox—you might be next!
Ready to explore O1 Pro’s groundbreaking power? Sign up for the waitlist and be among the first to experience the future of AI-assisted conversations—just remember to keep an eye on your tokens!
Sign up here and receive 1000 free credits to try Chat-O today!
Thank you for your ongoing support and passion for AI. With O1 Pro, we’re taking Chat-O—and your AI possibilities—to the moon! But remember: with great power (and great token costs) comes great responsibility. Plan accordingly, and get ready for the next generation of conversation on Chat-O!