Analysis
OpenAI quietly raised GPT-6.1 Sol's default context length to 500,000 tokens in Codex and ChatGPT Work, up from 272,000, and eliminated long-context surcharges for subscription users, according to Crypto Briefing. The change landed October 11, less than two weeks after Sol debuted, and it directly extends the pricing fight Pulse covered when Sol first launched against Google's Gemini in the AI model price war.
What's new since that coverage: at launch, Sol's context advantage over Gemini's competing model was a technical spec; now OpenAI has turned it into a pricing concession, dropping the surcharge that previously applied once developers exceeded the smaller 272,000-token window. For large codebases inside Codex, removing that surcharge lowers the real cost of using Sol, not just its theoretical ceiling.
“For large codebases inside Codex, removing that surcharge lowers the real cost of using Sol, not just its theoretical ceiling.”
A near-doubling of default context, paired with no added fee, raises the baseline enterprise buyers will expect from competing models -- Gemini and any other entrant now has to match a 500,000-token floor with no surcharge just to stay level, not to differentiate.
Shipping a pricing change this fast, inside two weeks of a model's debut, is also a tell that OpenAI isn't fully settled on Sol's commercial terms yet; a model with a stable value proposition typically doesn't need to cut its effective price twice in a month.