OpenAI priced GPT-5.6 Sol (largest Model) closer to Claude Opus 4.8 than to Anthropic’s restricted Mythos 5. Price war started.
Sol comes in at $5 input / $30 output per 1M tokens. For comparison:
Claude Opus 4.8: $5 / $25 Claude Mythos 5: $10 / $50 GPT-5.6 Terra: $2.50 / $15 GPT-5.6 Luna: $1 / $6
That makes Sol more expensive than Opus 4.8 on output, but far below Mythos 5 on both input and output.
And: "Terra has competitive performance to GPT‑5.5 while being 2x cheaper and Luna brings strong capability at our lowest cost."
They are also releasing Sol on Cerebras-Chips:
"We're also launching GPT‑5.6 Sol on Cerebras at up to 750 tokens per second in July, bringing frontier intelligence to customers at unprecedented speed."
A truly exciting release. OpenAI is entering the price war with this one.
And I love the names: Sol, Terra, Luna. Sounds fantastic!
Hyped for the release!