Codex CLI Defaults to GPT-6.1 Sol, 77% Cheaper [2026]
First sighting: Codex CLI default switch with a third-party cost claim.
3 items · 2 sources · 3 days
Operational story trace
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Latest change
OpenAI's Nov 4 DevRev case study says GPT-6.1 Sol powers its Computer and Operator agents for enterprise self-service, citing the reasoning, speed and cost balance.
GPT-6.1 Sol surfaced on Oct 15 as the new Codex CLI default, reported at 77% lower cost by a third-party site. OpenAI then began publishing customer case studies on it, starting with CodeRabbit's security agent on Oct 26.
State over time
First sighting: Codex CLI default switch with a third-party cost claim.
First OpenAI customer story, applying Sol to security risk investigation and fix review.
Extends Sol to customer-facing enterprise service agents, framed around reasoning, speed and cost.
First sighting: Codex CLI default switch with a third-party cost claim.
First OpenAI customer story, applying Sol to security risk investigation and fix review.
Extends Sol to customer-facing enterprise service agents, framed around reasoning, speed and cost.
What to watch — open questions
Storylines are threaded mechanically from the feed: stories that share a distinctive anchor across multiple days and sources. Each item links to its original source. The evidence trace, current state, and open questions are written by the editor routine and refreshed whenever a new beat lands.