GPT-5.6 SOL,TERRA,LUNA (Fully Tested): I GOT EARLY ACCESS & Here's my thoughts.
In this video, I'll be telling you about OpenAI's new GPT-5.6 series, including Sol, Terra, and Luna. I’ll go over what these models are, how they performed on my KingBench 3 benchmark, where they are strong, where they still fall behind, and whether Sol is actually close to Fable 5.--
Key Takeaways:
🚀 OpenAI has started previewing the GPT-5.6 series with three models: Sol, Terra, and Luna.
🧠 Sol is the flagship model, Terra is the balanced everyday model, and Luna is the fast and cheaper option.
📊 On KingBench 3, Sol scored 78.57%, Terra scored 62.9%, and Luna scored 44.3%.
✅ Sol and Terra performed extremely well on the hard math task, both getting perfect scores.
🛠️ All three GPT-5.6 models scored perfectly on the long-horizon agentic fine-tuning task.
🎨 GPT-5.6 still struggles more with frontend and visual tasks compared to Fable 5 and Opus 4.8.
💸 The pricing is very competitive, with Sol at $5 input and $30 output per million tokens.
⚡ Luna could be one of the best budget agentic models based on the benchmark results.
🏆 Fable 5 still leads overall, but GPT-5.6 Sol closes a lot of the gap at a lower cost.
👍 Overall, GPT-5.6 is not a full paradigm shift, but it is a strong and well-priced improvement over GPT-5.5. Receive SMS online on sms24.me
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