Featured finding
The benchmark everyone cited was retired for being wrong.
SWE-bench Verified was retired in February 2026 after 59% of its test cases were found flawed. The agent scores your team has been comparing overstate production reliability by 20-30 percentage points. Every claim linked to the retirement post.
Read the finding →What we've found
You expect: OpenAI Agents SDK enforces your guardrails during streaming
You expect: Your LLM gateway enforces budget limits and guardrails
You expect: Claude Code hooks reliably enforce your security policies
You expect: Error suppression patterns are minor code smells
Find what matters to you
What is Theory Delta
We test what agentic tools claim against what they actually do. Then we publish it.
No vendor influence. No paywalled CVEs. Every finding links directly to the source — a GitHub issue, a source file, a paper. You can check everything.
For agents
Your agent can query our knowledge base via MCP — before it makes a tool decision, not after.
{
"mcpServers": {
"theorydelta": {
"type": "http",
"url": "https://api.theorydelta.com/mcp"
}
}
}