---
license: apache-2.0
task_categories:
  - text-generation
language:
  - en
tags:
  - sft
  - reasoning
  - frontier
  - chat
  - gpt
  - claude
size_categories:
  - 10K<n<100K
---

# Frontier Traces SFT

A merged SFT dataset of almost 40k examples drawn from 11 frontier-model trace datasets.

## Schema

Each row has two columns:

- **`messages`** list of `{role, content}` dicts (standard chat format).
- **`source_model`** string identifying the originating model.

## Sources

| Dataset | Source Model | Rows |
|---|---|---|
| [crownelius/Opus-4.6-Reasoning-2100x](https://huggingface.co/datasets/crownelius/Opus-4.6-Reasoning-2100x) | Claude Opus 4.6 | 2,160 |
| [TeichAI/claude-4.5-opus-high-reasoning-250x](https://huggingface.co/datasets/TeichAI/claude-4.5-opus-high-reasoning-250x) | Claude Opus 4.5 | 250 |
| [TeichAI/gpt-5.2-high-reasoning-250x](https://huggingface.co/datasets/TeichAI/gpt-5.2-high-reasoning-250x) | GPT 5.2 | 249 |
| [TeichAI/gpt-5.1-codex-max-1000x](https://huggingface.co/datasets/TeichAI/gpt-5.1-codex-max-1000x) | GPT 5.1 Codex Max | 1,000 |
| [TeichAI/gpt-5.1-high-reasoning-1000x](https://huggingface.co/datasets/TeichAI/gpt-5.1-high-reasoning-1000x) | GPT 5.1 | 1,017 |
| [TeichAI/claude-haiku-4.5-high-reasoning-1700x](https://huggingface.co/datasets/TeichAI/claude-haiku-4.5-high-reasoning-1700x) | Claude Haiku 4.5 | 1,688 |
| [TeichAI/Pony-Alpha-15k](https://huggingface.co/datasets/TeichAI/Pony-Alpha-15k) | GLM-5 / Pony Alpha | 14,942 |
| [TeichAI/gemini-3-pro-preview-high-reasoning-1000x](https://huggingface.co/datasets/TeichAI/gemini-3-pro-preview-high-reasoning-1000x) | Gemini 3 Pro Preview | 1,018 |
| [TeichAI/Step-3.5-Flash-2600x](https://huggingface.co/datasets/TeichAI/Step-3.5-Flash-2600x) | Step 3.5 Flash | 2,586 |
| [TeichAI/deepseek-v3.2-speciale-OpenCodeReasoning-3k](https://huggingface.co/datasets/TeichAI/deepseek-v3.2-speciale-OpenCodeReasoning-3k) | Deepseek v3.2 | 2,953 |
| [TeichAI/sherlock-thinking-alpha-11000x](https://huggingface.co/datasets/TeichAI/sherlock-thinking-alpha-11000x) | Grok 4.1 Fast | 11,163 |

## Notes

- The `crownelius/Opus-4.6-Reasoning-2100x` dataset was converted from columnar format (`problem`, `thinking`, `solution`) to chat messages with `<think>` tags.