C13 — OpenAI API changelog: GPT-6.1 Sol release

• Publisher: OpenAI
• Source: OpenAI API changelog: GPT-6.1 Sol release
• Published: 2026-09-29
• Updated: Not stated / not established
• Accessed: 2026-10-22
• Type: Official dated release entry
• Evidence: opened primary page; relevant content read.

Paraphrased finding

September 29 entry states GPT-6.1 Sol Standard prices apply through 272,000 input tokens; September 22 entry states the same short-context boundary for Luna.

Limits

Dated release entry establishes boundary; current pricing page remains the rate authority.