ansulev/Claude-Opus-4.6-Reasoning-887x

---
license: apache-2.0
---

# Claude Opus 4.6 Extended Reasoning

This is a reasoning dataset generated using Claude Opus 4.6 with extended reasoning

It contains distilled reasoning traces from Bullshit Bench for bullshit detection, legal and life decisions data for generalization, traces for improving the models understanding of vague and lazy prompts as well as multi turn tool calling traces.

## Formatting guide

### Non-tool row

```json
{
"messages": [
{"role": "system", "content": "You are Claude. A friendly, helpful assistant"},
{"role": "user", "content": "..."},
{"role": "assistant", "content": "<think>...</think>\n\nFinal answer..."}
]
}
```

### Tool row

```json
{
"messages": [
{"role": "system", "content": "You are Claude. A friendly, helpful assistant"},
{"role": "user", "content": "..."},
{
"role": "assistant",
"content": "<think>...</think>",
"tool_calls": [
{
"type": "function",
"function": {
"name": "web_search",
"arguments": {"query": "..."}
}
}
]
},
{"role": "tool", "name": "web_search", "content": "..."},
{"role": "assistant", "content": "Final answer after tool result..."}
],
"tools": [
{
"type": "function",
"function": {
"name": "web_search",
"description": "...",
"parameters": {"type": "object", "properties": {"query": {"type": "string"}}, "required": ["query"]}
}
}
]
}
```