OpenAI's GPT-5.6 prices Terra at half GPT-5.5's cost and targets 750 tokens/sec for Sol in July
OpenAI launched GPT-5.6 in three tiers — Sol ($5/$30), Terra ($2.50/$15), and Luna ($1/$6 per million tokens) — with Terra delivering GPT-5.5-equivalent performance at half the cost. The sharper number is 750 tokens per second on Sol via Cerebras in July — five to fifteen times faster than current frontier models — which makes real-time agentic loops and live code generation practical without architectural workarounds.
Source: glenrhodes.com ↗
750 tokens per second is coming to Sol in July. For context, most frontier models today run somewhere between 50 and 150 tokens per second in practice. 750 is a different category of experience.
Glenn Rhodes, glenrhodes.com
Why this matters
- → 750 tokens/sec makes real-time agentic loops architecturally viable without workarounds.
- → Terra undercuts GPT-5.5 pricing by 50% at equivalent performance, reshaping cost competition.
- → Government-gated preview access establishes precedent for state influence over capability distribution.
Speed, price, and control