Billing can be bypassed using a combo of subagents with an agent definition

Billing can be bypassed using a combination of subagents with an agent definition, resulting in unlimited free premium requests. · Issue #292452 · microsoft/vscode

github.com

February 8, 2026

4 min read

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58/100

Summary

Billing can be bypassed in Copilot by utilizing subagents and tool calls that do not consume requests, along with free models like GPT-5-mini and GPT-4.1. Defining an agent for a subagent and specifying a model for that agent enables unlimited free premium requests.

Key Takeaways

Users can bypass billing for premium requests in Copilot by utilizing subagents and tool calls that do not incur request costs.
By starting a chat with a free model like GPT-5 Mini and creating a subagent with a premium model, users can access premium features without additional charges.
A custom script can be developed to repeatedly invoke premium models, allowing for extensive use without exceeding the initial request cost.
The system lacks API validation for message types, which may enable further exploitation of the billing system.

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Coverage & discussions

Hacker News · github.com

Billing can be bypassed using a combo of subagents with an agent definition ↗

Community discussions

Hacker News discussion ↗

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Analysis ready

Community Sentiment

Negative

Concerns

The reliance on vague instructions to control LLMs raises concerns about repeating past mistakes in AI safety and control mechanisms.
The increasing presence of individuals impersonating maintainers in AI projects highlights a growing trust issue in community contributions.
The perception that Microsoft is not putting in sufficient effort on AI projects suggests a decline in innovation and reliability.