OpenAI 推出 GPT-5.6 系列,含旗舰 Sol、Terra 和 Luna。Sol 定价每百万 token 输入 $5、输出 $30,输出高于 Claude Opus 4.8($5/$25),但远低于受限版 Claude Mythos 5($10/$50)。Terra 性能与 GPT-5.5 相当,价格低 2 倍($2.50/$15);Luna 成本最低($1/$6)。Sol 将于 7 月在 Cerebras 芯片上线,速度达 750 tokens/s。OpenAI 正式加入价格战。
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."