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ChatGPT (GPT-5.6 / Sol)
The All-Round Ecosystem Leader
OpenAI's GPT-5.6 family (public July 9, 2026) replaced GPT-5.5 as the default model, with three tiers: Sol (flagship), Terra (balanced), and Luna (efficient). ChatGPT Work, a new agentic product that handles full jobs (drafts, notes, team context) launched the same day. Used by over half of all chatbot users worldwide.
✓Strengths
- •GPT-5.6 Sol/Terra/Luna tiers — Sol is the new flagship frontier model
- •ChatGPT Work: agentic product that runs full jobs autonomously (July 9)
- •GPT-Live-1 full-duplex voice rolling out to paid users
- •Best-in-class image generation built in (GPT Image 2)
- •New $8/month Go tier lowers the entry price
- •Massive third-party integration support
⚠Considerations
- •Ads now shown on Free and Go tiers (since Feb 2026)
- •Loses the thread on very long contexts vs Claude/Gemini
- •Confusing multi-tier pricing (Go → Plus → Pro plus API tiers)
- •Pro tiers are expensive ($100-200/month)
Pricing & Details
Pricing
$8/month (Go), $20/month (Plus), $100-200/month (Pro)
Free Option
Yes (with usage limits and ads)
Best For
General use, workflow orchestration, multimodal tasks, beginners
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