Plan Mode Parallelism Now Tier-Based

What changed: Plan mode now adjusts parallel agent count based on subscription tier instead of using a fixed default

Previous behavior: All users got 4 parallel agents in plan mode (unless overridden by environment variable)

New behavior:

• Free tier: 1 parallel agent (75% reduction)
• Team/Enterprise tier: 3 parallel agents (25% reduction)
• Max subscription with 20x model: 3 parallel agents
• Environment variable override: Still available via CLAUDE_CODE_PLAN_V2_AGENT_COUNT (1-10)

Impact:

• Free tier users will experience slower plan mode execution
• Premium users retain better parallelism
• Change encourages upgrade to paid tiers for better performance
• Evidence: JQ2() at line 315736 (was v62() at line 316064 in v2.0.46)