#Llm
38 posts
37
#openai · #ia
GPT-5.6 Sol vs Terra vs Luna: Pricing by Tier and Which to Use
What's the difference between GPT-5.6 Sol, Terra and Luna? Same generation, three tiers: Sol is the agentic top end ($5/$30 per 1M tokens), Terra is the middle ground ($2/$12) and Luna is the cheap, fast one ($0.20/$1.20). With the pricing in effect since the July 30 cut, here's when each one is worth it and when Sol is just wasted budget.
26 Jun · 11 min
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38
#ia · #ai-agents
Fable 5 vs Opus 4.8: which one to use (and the 10 tasks where the difference shows)
Fable 5 or Opus 4.8, which one should you use? A straight verdict by task type, with the 10 concrete situations where Fable gets it done and Opus 4.8 did it badly or not at all: migration at scale, code from a screenshot, long-running agents and reasoning over documents. Plus what each one costs and the cases where Opus 4.8 is still the right call.
09 Jun · 11 min
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