| 1. Claude Fable 5 (High) |
| 2. Claude Opus 4.8 (Thinking) |
| 3. GPT 5.5 (xHigh) |
| 4. Claude Opus 4.7 |
| 5. Claude Opus 4.7 (Thinking) |
The BriefTesla told staff on July 6 it's limiting AI tool spending to $200 per week per employee, after months of pushing aggressive AI adoption led some software engineers to burn thousands of dollars in tokens weekly. The cap exempts xAI's Grok and Composer, an attempt to steer usage toward Musk's own tools, but insiders say most Tesla engineers use Anthropic's Claude instead and Grok never caught on internally. It's a preview of what's coming for a lot of workplaces: leadership wants more AI use, then panics at the bill once usage-based pricing hits real budgets.
Level UpSimon Willison's latest tip on Claude Code: stop micromanaging which model handles which task. Instead of hardcoding rules like 'only write tests for big features,' just tell the model to use its own judgment, including letting it decide when to hand off routine work to a cheaper subagent model. He reports getting more done while burning fewer tokens. Worth trying this week if you're running up against usage caps like Tesla's. Simon Willison: judgement