GPT-6.1 TerraOpenAI Sets GPT-6.1 Terra at $1 Input, $5 Output per Million Tokens
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 readvendor benchmarksVendor AI Benchmarks Need Independent Runs With Task Logs
A vendor-run benchmark is a screening signal. Business cases should cite independent runs with per-task logs, led by Epoch AI and Artificial Analysis, plus a 50-task replication on your own data.
October 7, 2026 · 16 min readClaude Sonnet 5.5Claude Sonnet 5.5 Costs More Than Opus 5.5 at the Same Score
Claude Sonnet 5.5 lists at half Opus 5.5's token price, but Artificial Analysis measured it at $7.60 per task at max effort against $3.46 for Opus at xhigh for the same score. It saves money only at low and high effort, and five breaking changes sit behind the model-ID swap.
September 28, 2026 · 10 min readGrok 4.7Grok 4.7 Kept Its $2/$6 Price and Can Still Double Cost per Task
Grok 4.7's per-token price didn't move. Its per-task cost did: up 47% at matched effort on Artificial Analysis's index, down 10% on Cursor's own benchmark. Price it on your workload.
September 22, 2026 · 11 min read