T3 Code Brings Cross-Harness Subagents

T3 Code’s compelling advantage is turning model choice into a routing decision instead of a platform lock-in.

• –Cross-harness delegation lets developers match models to task type, cost, and capability.
• –T3 Code’s MCP-based design supports Claude Code threads spawning Codex subagents.
• –The GPT-6.1 Sol figure is an anecdotal usage statistic, not an independently verified benchmark.
• –Mixed-model workflows introduce real challenges around authentication, context transfer, observability, and spend control.
• –The broader shift is from single-agent coding tools toward orchestration layers that coordinate entire model fleets.