2026-08-21OpenAI / GPT-5.6 SolSourceInput price: $5 -> $4 per 1M tokensOutput price: $30 -> $20 per 1M tokensDetailed pricing tiers changed.
2026-07-31OpenAI / GPT-5.6 LunaSourceInput price: $1 -> $0.2 per 1M tokensOutput price: $6 -> $1.2 per 1M tokensDetailed pricing tiers changed.
2026-07-31OpenAI / GPT-5.6 TerraSourceInput price: $2.5 -> $2 per 1M tokensOutput price: $15 -> $12 per 1M tokensDetailed pricing tiers changed.