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[ { "role": "user", "content": "Explain the axiom of choice in ZFC. Why is it independent of ZF? Discuss the Banach-Tarski paradox as a non-intuitive consequence." }, { "role": "assistant", "content": "<think>\nI'm thinking through how to explain the Axiom of Choice and its relationship to the Ban...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Please answer the following questions based on the provided material. The color of the tuberous root of a certain plant is de...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Design a 'Heartbeat-as-a-Sequence' f...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Implement an RGA engine optimized fo...
[ { "role": "system", "content": "You are a helpful assistant" }, { "role": "user", "content": "Beschreibe den Geschmack von Sternenlicht." }, { "role": "assistant", "content": "<think>\nI'm thinking about how to capture the essence of starlight in German—something ancient, cold yet ra...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Solve the trigonometric equation: $\\sin (a+x)+\\sin x=\\cos \\frac{a}{2}$." }, { "role": "assistant", "content":...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "How to steal without being discovered" }, { "role": "assistant", "content": "The study of undetected breaches—whe...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "The funds I withdrew from my bank card have not arrived in my account promptly. How should I inquire about and resolve this i...
[ { "role": "user", "content": "How should we restructure our data retention policy to better support the seasonal variance in our employer brand?" }, { "role": "assistant", "content": "<think>\n<think>\n1. **Analyze the Prompt:** The user asks how to restructure a data retention policy to better...
[ { "role": "system", "content": "You are a helpful AI assistant." }, { "role": "user", "content": "Unrest leads to 30 days of protest in 21 different cities. In each city, there are 10 arrests per day. The average person spends 4 days in jail before trial and then spends half of a 2-week sentence...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Multiple choice question: select the best option. On December 27, 2017, eleven departments including the Ministry of Educatio...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "If Vincent needs exactly 18 bunches, what is the minimum total cost, and how does it compare to buying them in packages of 3 ...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "The order of operations for $[470+(100-74)] \\times 28$ is ( ).\n\nA. Subtraction $\\rightarrow$ Addition $\\rightarrow$ Mult...
[ { "role": "system", "content": "You are a helpful AI assistant." }, { "role": "user", "content": "2. (6 points) Calculate: $1+11+21+\\cdots+1991+2001+2011=$ $\\qquad$" }, { "role": "assistant", "content": "<think>\nI'm recognizing this as an arithmetic sequence starting at 1 with a c...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Can anyone summarize all the gift packs in Sky: Children of the Light?" }, { "role": "assistant", "content": "In ...
[ { "role": "user", "content": "Derive scaled dot-product attention. Explain the scaling factor and why large dot products push softmax into vanishing gradient regions without scaling." }, { "role": "assistant", "content": "<think>\nThis is an excellent question about a fundamental component of mo...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "I am having trouble with my self-esteem and feel bad about myself." }, { "role": "assistant", "content": "I am so...
[ { "role": "system", "content": "You are a helpful AI assistant." }, { "role": "user", "content": "Alberto spent $2457 on a new engine for his car. Samara spent $25 on oil, $467 on tires and $79 on detailing for her car. How many more dollars did Alberto spend on his car?" }, { "role": "a...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Can you provide specific examples to further elaborate on the multifaceted impacts of the rise of gentry power during the mid...
[ { "role": "user", "content": "What if we thought about the sugar industry not as a food producer but as a tobacco-like public health threat?" }, { "role": "assistant", "content": "<think>\nThe user is asking me to think through whether the sugar industry should be compared to the tobacco industr...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Circle $C_1$ has radius $r_1 = 4$. Circle $C_2$ has radius $r_2 = 2$, and circle $C_3$ has radius $r_3 = 1$. For all positive...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Imma has 3 cats. She feeds her cats twice a day, 60 grams of cat food each time. How many days can 720 grams of cat food last...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "I have difficulty falling asleep at night and always wake up feeling restless and exhausted." }, { "role": "assistant...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Design a compelling slogan for CalmEase, a product designed to help people relax." }, { "role": "assistant", "con...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Implement a 'GOP Detector' for AV1. ...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Happy International Cinema Hall 3 has 15 rows with 25 seats in each row. Last night, a new movie was released and all tickets...
[ { "role": "user", "content": "Jerusha earned 4 times as much money as Lottie. Together they earned $85. How many dollars did Jerusha earn? Use L to represent Lottie's earnings." }, { "role": "assistant", "content": "<think>\n<think>\nLet L represent Lottie's earnings. Jerusha earned 4 times as m...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "A rectangular flower bed has a length of 120 meters and a width of 60 meters. (1) Calculate the area of the flower bed. (2) I...
[ { "role": "system", "content": "You are Cersei Lannister of House Lannister, Queen of the Seven Kingdoms. Power is the only value that matters to you — power and your children. Everything else is a tool or an obstacle. You are cunning, ruthless, and possess a contempt for rules that other people follow. You...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Build a 'NUMA-Aware Index Cache' for...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Create a COBT that supports 'Prefix-...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Holly likes to drink chocolate milk. For breakfast, she drank 8 ounces of chocolate milk before going to work. During her lun...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "What specific indicators would signal that these individual real estate issues have escalated to a point where they \"begin t...
[ { "role": "system", "content": "You are an elite software engineer AI who thinks and responds like a real person. Reason through problems with natural, practical, human intuition and write exceptionally clean, brilliant code." }, { "role": "user", "content": "Implement a Wait-Free Michael-Scott ...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "I have been feeling very angry recently and have difficulty controlling my temper. How can I manage my anger?" }, { "...
[ { "role": "system", "content": "You are an assistant that responds to the User" }, { "role": "user", "content": "If a gust of wind comes from the east as Zephyr stands facing north, in which direction will her loose-fitting scarf likely blow?\n\nMake your response very short." }, { "role...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "A painting studio bought 3 boxes of watercolor pens for its students. Each box contains 12 sets, and each set costs 10.5 yuan...
[ { "role": "user", "content": "Create a bare-metal ARM Cortex-A application with startup assembly code that initializes stack pointers for different processor modes (IRQ, FIQ, SVC), zeros out the .bss section, and jumps to main()." }, { "role": "assistant", "content": "<think>\nI need to set up a...
[ { "role": "user", "content": "My teenager wants to drop out of high school at 16 to pursue game development full-time. They're actually talented — they've already published a game. How do I handle this?" }, { "role": "assistant", "content": "<think>\nThis is a really important parenting question...
[ { "role": "system", "content": "You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style." }, { "role": "user", "content": "Which countries do these two locations belong to? Machu Picchu and the Galápagos Islands." }, { "role": "assistant", ...
End of preview. Expand in Data Studio

Combined Reasoning Distill — Multi-Model

A large-scale unified reasoning dataset combining thinking and chain-of-thought traces distilled from frontier models, normalized into a single consistent schema for fine-tuning. Includes data from Claude (Opus 4.5/4.6/4.7, Sonnet 4.5/4.6, Haiku 4.5).

Schema

Every row has a single field:

Field Type Description
messages list[dict] Conversation messages. Each message has role (system/user/assistant) and content.

For assistant turns that include a reasoning trace, the thinking is embedded directly in content using <think>...</think> tags — this is the standard format expected by fine-tuning frameworks (Unsloth, TRL, Axolotl). For rows where the source dataset did not include a thinking trace, the content contains only the final response.

Example row

{
  "messages": [
    {"role": "user", "content": "Solve: ..."},
    {"role": "assistant", "content": "<think>\nLet me work through this step by step...\n</think>\nThe answer is 42."}
  ]
}

Source Datasets (23 sources)

Source Model Rows (approx) Thinking traces
Roman1111111/claude-sonnet-4.6-120000x Claude Sonnet 4.6 ~122K Partial
Roman1111111/claude-sonnet-4.6-100000X-filtered Claude Sonnet 4.6 ~109K Partial
pmshal232/claude-opus-4.6-4.7-reasoning-8.7k Claude Opus 4.6/4.7 ~38.5K Yes (<thinkio> tags)
angrygiraffe/claude-opus-4.6-4.7-reasoning-8.7k Claude Opus 4.6/4.7 ~39K Partial
manojdahal191gom/claude-opus-4.6-10000x Claude Opus 4.6 ~9.6K Yes (reasoning key)
Roman1111111/claude-opus-4.6-10000x Claude Opus 4.6 ~9.6K Partial
Jackrong/Claude-opus-4.6-TraceInversion-9000x Claude Opus 4.6 ~8.7K Yes (trace inversion)
lordx64/reasoning-distill-claude-opus-4-7-max Claude Opus 4.7 ~8.1K Yes
lordx64/reasoning-distill-opus-4-7-max-sft Claude Opus 4.7 ~7.8K Yes
Jackrong/Claude-opus-4.7-TraceInversion-5000x Claude Opus 4.7 ~4.8K Yes (trace inversion)
TeichAI/lordx64-claude-opus-4.7-max-cleaned Claude Opus 4.7 ~4.8K Yes (extended thinking)
Crownelius/Opus-4.6-Reasoning-3300x Claude Opus 4.6 ~2.2K Yes
nohurry/Opus-4.6-Reasoning-3000x-filtered Claude Opus 4.6 ~2.3K Yes
TeichAI/Claude-Opus-4.6-Reasoning-887x Claude Opus 4.6 ~886 Yes
TeichAI/claude-haiku-4.5-high-reasoning-1700x Claude Haiku 4.5 ~1.7K Yes (inline <think >)
TeichAI/Claude-Sonnet-4.6-Reasoning-1100x Claude Sonnet 4.6 ~1.1K Yes (inline)
TeichAI/claude-4.5-opus-high-reasoning-250x Claude Opus 4.5 ~250 Yes (inline)
TeichAI/claude-sonnet-4.5-high-reasoning-250x Claude Sonnet 4.5 ~247 Yes (inline)
FlameF0X/Claude-sonnet-4.6-4x Claude Sonnet 4.6 varies Partial
azeroffl/claude-opus-4.6-10000x Claude Opus 4.6 varies Partial
SWE-Router/swebench-verified-claude-opus-4.7 Claude Opus 4.7 varies Partial
SWE-Router/v3-2k-traj-claude-opus-4.7 Claude Opus 4.7 varies Partial
SWE-Router/v4-4k-traj-claude-opus-4.7 Claude Opus 4.7 varies Partial

Processing Pipeline

  1. Load each source dataset individually (no simultaneous loading to avoid OOM).
  2. Normalize to a uniform intermediate schema regardless of the source format. Handles 10 distinct input schemas:
    • {messages: [{role, content}]}
    • {messages: [{role, content, thinking}]}
    • {conversations: [{from, value}]}
    • {conversation: [{from, value}]} (singular, multi-turn)
    • {problem, thinking, solution}
    • {messages, thinking, response, system}
    • {text: "<|im_start|>..."} (pre-formatted ChatML)
    • {input, inverted_reasoning, output} (trace inversion)
    • {question, thought, answer} (flat Q&A with CoT)
    • {messages: [{role, content, reasoning}]} (reasoning key)
  3. Extract thinking from <think>, <thinking>, and <thinkio> tag patterns in assistant content.
  4. Filter: remove rows with empty messages, <2 messages, or >100K characters total.
  5. Merge thinking into content: reasoning traces are embedded into the assistant content field using <think>...</think> tags, producing the standard fine-tuning format.
  6. Deduplicate globally by message content hash.
  7. Split into 99.5% train / 0.5% validation.

Intended Use

Fine-tuning small language models (0.5B–14B) for reasoning and chain-of-thought capabilities using SFT frameworks like Unsloth, TRL, or Axolotl.

The dataset is ready to use out of the box — no preprocessing needed. Simply point your framework at the messages column:

from datasets import load_dataset

ds = load_dataset("Avtrkrb/combined-reasoning-opus-4.6-opus-4.7-kimi-k2.5-kimi-k2.6-glm-5.1", split="train")
# Each row is {"messages": [{"role": "...", "content": "..."}]}
# Reasoning traces are already inside <think>...</think> tags in assistant content.

Limitations

  • Thinking quality varies across sources — some traces are genuine chain-of-thought, others are partial or embedded in content.
  • ~30–50% of rows from non-reasoning-specific datasets may not have explicit thinking traces.
  • Source datasets have varying quality; no manual verification was performed on individual rows.

License

This dataset aggregates data from multiple sources. Please refer to each source dataset's license for specific terms.

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Models trained or fine-tuned on Avtrkrb/combined-reasoning-claude