Every THE D[AI]LY BRIEF article on GPT-6.1 Sol — enterprise AI analysis, benchmarks, vendor comparisons, and ROI frameworks for technology and business leaders. Updated as new coverage publishes.
GPT-6.1 Sol costs $2 input and $10 output per million tokens on OpenAI, Azure and Bedrock alike. Azure wins for Microsoft shops on MACC drawdown, Entra ID and its SLA; OpenAI direct keeps Ultrafast and hosted agents.
November 10, 2026 · 14 min read
GPT-6.1 Terra costs $1/$5 per million tokens, half of Sol, and scores 48 to Sol's 52 on Artificial Analysis. At max effort it uses twice the tokens, so run it at low or medium.
October 26, 2026 · 8 min read
On a 30-turn agent loop, prompt caching saves 80-89% depending on the provider, not 90%. A timestamp in the system prompt drops Claude's saving to 6%, and a volatile tool definition makes caching cost more than not caching.
October 1, 2026 · 17 min read
Prompt caching cuts a 400K-token long-context answer to $0.085 on Claude Sonnet 5.5, but RAG still answers for $0.017. The crossover formula, the accuracy-at-depth evidence and the latency users notice.
October 1, 2026 · 14 min read
Gemini 4 Argon tops the Vals Index at $15.68 per test, cheaper than Claude Sonnet 5.5 and Opus 5.5 even at its $4/$20 standard price. But access is limited to Fairwind security teams and trusted testers, with no GA date.
September 30, 2026 · 7 min read
GPT-6.1 Sol costs a fifth of GPT-6 Astra per token and ties it on coding, but trails it by 11 points on Terminal-Bench Science. It still wins on cost per solved task — if your failures are cheap.
September 29, 2026 · 8 min read