| 1. Claude Fable 5 (High) |
| 2. GPT 5.6 Sol (xHigh) |
| 3. Claude Opus 4.8 (Thinking) |
| 4. GPT 5.5 (xHigh) |
| 5. Claude Sonnet 5 (High) |
The BriefFive of the biggest names in business software, Google, Microsoft, Salesforce, Snowflake and ServiceNow, agreed to back a shared standard for connecting AI agents to workplace tools, a direct answer to Anthropic's MCP, which has been the default plug for 18 months. A standards fight sounds abstract, but it decides which AI assistants can reach the software your company actually runs on, the way one charging cable either fits your phone or does not. Closer to home: Anthropic extended free Fable 5 access for paid Claude plans through July 19, so this is the week to get your money's worth.
Level UpThis week's standards fight is your cue to finally learn what MCP is: the open 'USB-C port' that lets an AI assistant safely use your tools, files, and apps. Spend 20 minutes with the official docs, then connect one MCP server to Claude or ChatGPT and watch an agent actually use a tool. Once you have seen that, the whole agent conversation stops being abstract, and you will understand exactly what five software giants are now fighting over. Start here: the official Model Context Protocol docs