subagents literally never work because my claude pro sub can't use claude-sonnet-4-6-1m

Bug Description
subagents literally never work.

⏺ Explore(Explore experiment code and analysis)
⎿ Prompt:
Do a very thorough exploration of the /Users/aryank/Documents/Research/collaborative-llms
repository. I need to understand:

1. The full experimental pipeline: how experiments are run, what benchmarks are used, how

personality is injected into LLM agents

1. The analysis code: what metrics are computed, what statistical tests are used, how figures are

generated

1. The actual results: look at CSV files in experiments/results/csv/ and understand what the data

shows 4. The personality prompts: how are Big Five traits operationalized into prompts?

1. The bargaining experiments: how are they set up and what do they measure?
2. The MARBLE benchmark integration: how is it configured and used?

Focus on reading actual code files, not markdown documentation. Read:

• experiments/analyze_all.py
• experiments/personality_prompts.py
• experiments/generate_paper_figures.py
• experiments/analyze_communication.py
• experiments/llm_classifier.py
• experiments/run_bargaining.py (if exists)
• experiments/results/csv/*.csv files
• benchmarks/marble/marble/agent/base_agent.py
• Any config files for experiments

Be very thorough - read full files, not just snippets.
⎿ Response:
There's an issue with the selected model (claude-sonnet-4-6-1m). It may not exist or you may not
have access to it. Run /model to pick a different model.
⎿ Done (0 tool uses · 0 tokens · 0s)

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 2.1.81
• Feedback ID: 1bf72257-f247-41b6-9224-dc7d635dd4ea

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/aryank/.local/share/claude/versions/2.1.81 (expected in multi-process scenarios)\n    at TET (/$bunfs/root/src/entrypoints/cli.js:2724:2174)\n    at fgq (/$bunfs/root/src/entrypoints/cli.js:2724:1318)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-21T22:05:02.710Z"},{"error":"Error: 404 {\"type\":\"error\",\"error\":{\"type\":\"not_found_error\",\"message\":\"model: claude-sonnet-4-6-1m\"},\"request_id\":\"req_011CZGz46XiHRDsPssKZRBfk\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:205:286207)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:244:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-21T22:05:45.173Z"}]