GPT-6 Sol, GPT-6 Luna, AND Claude Opus 5.5 all just dropped. So which model should you actually use?

Join Grant Harvey and Corey Noles from The Neuron LIVE today as we put the newest models from OpenAI and Anthropic head-to-head.

OpenAI says GPT-6 Sol makes roughly half as many mistakes as GPT-5.6 Sol, bringing Astra-level reliability to a much cheaper model, while GPT-6 Luna is designed for fast, high-volume work like summarization, extraction, and quick questions. OpenAI is also dramatically cutting prices, with Sol reportedly coming in at $2 / $10 per million input / output tokens and Luna at just $0.10 / $0.50.

Meanwhile, Anthropic launched Claude Opus 5.5 just 90 minutes earlier. Anthropic says it performs around Claude Fable 5.1 level on most work while costing roughly 40% less to run than Opus 5, generating output more than 30% faster, and communicating more clearly. Its API price is $4 / $20 per million input / output tokens.

And the benchmark fight is already spicy: Anthropic reports Opus 5.5 scoring 66.4% on Terminal-Bench 4.0, 54.4% on FrontierCode, and 1,846 Elo on GDPval-AA v2.1, with particularly strong results in coding, computer use, and professional knowledge work.

On the livestream, we’ll break down:

⚔️ GPT-6 Sol vs. GPT-6 Luna

🤖 Claude Opus 5.5 vs. OpenAI’s newest models

💻 Coding, reasoning, writing, agents, and everyday work

💰 Pricing and what it means for AI users

🎯 Which model fits which kind of task

🧪 First reactions and live testing

💬 Your questions from the chat

If you’ve been wondering whether to use GPT-6 Sol, GPT-6 Luna, Claude Opus 5.5, or GPT-6 Astra, come hang out and test them with us.

🔴 LIVE: 3 PM CT / 1 PM PT

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Models mentioned:

GPT-6 Sol + Luna: https://openai.com/index/introducing-gpt-6-sol-and-luna/Claude Opus 5.5: https://www.anthropic.com/claude-opus-5-5

BONUS: GPT-6 Sol vs Claude Opus 5.5 LIVE: Which AI Model Is Better?

The Neuron: AI Explained

BONUS: GPT-6 Sol vs Claude Opus 5.5 LIVE: Which AI Model Is Better?