GPT-6.1 Sol Default Context Jumps to 500K

This is a meaningful quality-of-life upgrade for long-running coding agents, though more context does not automatically mean better retrieval or faster responses.

• –The change represents roughly an 80% increase in default working context.
• –Fewer compactions should help preserve requirements, decisions, and repository details across extended tasks.
• –Codex users can override the default up to 1 million tokens when projects demand it.
• –The API supports a roughly 1.05-million-token context, but prompts above 272K incur higher pricing.
• –Developers should still monitor latency, context quality, and usage consumption on very large sessions.