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2 classes
{"conversations": [{"from": "human", "value": "Write a Python generator function that yields batches of items from any iterable, where each batch is a list of up to N items. The last batch may be smaller than N."}, {"from": "gpt", "value": "```python\nfrom typing import Generator, Iterable, TypeVar\n\nT = TypeVar('T')\...
coding
codegen
9
false
[FABLE5_TRACE] <|system|> 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. <|user|> Implement a 'Hierarchical TLB' (L1 and L2 TLBs). L1 is small and fast (Direct Mapped), L2...
agentic
fable
24
true
[INPUT] [{"role": "system", "content": "You are an expert code editor. Given an instruction and original code, produce the edited code that satisfies the requirements. Write only the complete modified code in your response.\n\nBefore responding, reason through the problem in a <think> block."}, {"role": "user", "conten...
frontend
nextcoder
22
false
[FABLE5_TRACE] <|user|> Security analysis of QUIC in glibc. Focus on state machine bugs, parsing edge cases, DoS vectors, and memory safety. <|assistant|> <think> Let me work through this problem from first principles. First, let me restate the problem formally: Given input X of size n, we need to produce output Y w...
agentic
fable
16
true
{"conversations": [{"from": "human", "value": "Write a Rust function that takes a slice of strings, filters out empty strings, trims whitespace, converts to uppercase, deduplicates (preserving first occurrence order), and returns a Vec<String>."}, {"from": "gpt", "value": "```rust\nuse std::collections::HashSet;\n\nfn ...
coding
codegen
8
false
[FABLE5_TRACE] <|system|> 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. <|user|> Create a Go 'Jitter-Buffer' for real-time audio/video streaming over raw Ethernet. The bu...
agentic
fable
24
true
[FABLE5_TRACE] <|system|> You are a programming language implementer. Show working code in Haskell or a typed language; explain combinator design choices alongside the code. <|user|> I'm trying to write a parser for a small config DSL in Haskell — sections, key=value pairs, comments. Tried megaparsec but I keep getti...
agentic
fable
33
true
{"conversations": [{"from": "human", "value": "Write a Rust function that takes a slice of strings, filters out empty strings, trims whitespace, converts to uppercase, deduplicates (preserving first occurrence order), and returns a Vec<String>."}, {"from": "gpt", "value": "```rust\nuse std::collections::HashSet;\n\nfn ...
coding
codegen
8
false
[FABLE5_TRACE] <|system|> 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. <|user|> Develop a lock-free 'Caching Proxy' for a Python asynchronous web server. The cache must ...
agentic
fable
26
true
[FABLE5_TRACE] <|system|> 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. <|user|> Implement a Python-based 'Device Tree Query Language' (DTQL). Design a DSL (e.g., `SELECT...
agentic
fable
32
true
{"conversations": [{"from": "human", "value": "Write a Rust function that takes a slice of strings, filters out empty strings, trims whitespace, converts to uppercase, deduplicates (preserving first occurrence order), and returns a Vec<String>."}, {"from": "gpt", "value": "```rust\nuse std::collections::HashSet;\n\nfn ...
coding
codegen
8
false
[FABLE5_TRACE] <|system|> 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. <|user|> Implement a 'Successor List Consistency Checker' that runs as a background thread. It sho...
agentic
fable
24
true
[FABLE5_TRACE] <|system|> 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. <|user|> Implement 'Adaptive Span Abandonment'. During lazy sweep, if a span is found to be 100% l...
agentic
fable
20
true
[FABLE5_TRACE] <|system|> You are an AI designed to communicate and reason with a deeply natural, authentic, and human-like style. <|user|> Please analyze the stability of a complex electrostatic torque system. <|assistant|> Analyzing the stability of a complex electrostatic torque system requires an integrated look...
agentic
fable
16
true
<|im_start|>system You are a helpful coding assistant.<|im_end|> <|im_start|>user Provide the best response to a given instruction. Follow the following steps to craft your response: 1. reason about the given instruction 2. provide a high-quality solution 3. offer a concise explanation 4. write tests to verify the corr...
backend
atlas
14
false
[FABLE5_TRACE] <|system|> 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. <|user|> Implement a vectorized 'Spatial Index' (e.g., R-Tree or Quadtree). The nodes and bounding...
agentic
fable
27
true
[FABLE5_TRACE] <|system|> 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. <|user|> Build an LBA translation layer that supports 'In-line Data' within the indirect pointers ...
agentic
fable
23
true
<|im_start|>system You are a helpful coding assistant.<|im_end|> <|im_start|>user Provide the best response to a given instruction. Follow the following steps to craft your response: 1. reason about the given instruction 2. provide a high-quality solution 3. offer a concise explanation 4. write tests to verify the corr...
coding
atlas
13
false
{"conversations": [{"from": "human", "value": "Write a Python generator function that yields batches of items from any iterable, where each batch is a list of up to N items. The last batch may be smaller than N."}, {"from": "gpt", "value": "```python\nfrom typing import Generator, Iterable, TypeVar\n\nT = TypeVar('T')\...
coding
codegen
9
false
[INPUT] [{"role": "system", "content": "You are an expert code editor. Given an instruction and original code, produce the edited code that satisfies the requirements. Write only the complete modified code in your response.\n\nBefore responding, reason through the problem in a <think> block."}, {"role": "user", "conten...
tools
nextcoder
21
false
{"conversations": [{"from": "human", "value": "Write a SQL query that, for each customer, shows their last 3 orders (by order date), with a running total of order_amount within those 3 orders, and a rank indicating their position by total spending among all customers."}, {"from": "gpt", "value": "```sql\nWITH ranked_or...
coding
codegen
4
false
[INPUT] [{"role": "system", "content": "You are an expert code editor. Given an instruction and original code, produce the edited code that satisfies the requirements. Write only the complete modified code in your response.\n\nBefore responding, reason through the problem in a <think> block."}, {"role": "user", "conten...
frontend
nextcoder
23
false
[FABLE5_TRACE] <|user|> What are the major branches of Philosophy? <|assistant|> • Metaphysics: The study of fundamental concepts such as existence, reality, being, time, substance, space, causality, etc. It asks questions like "What is the nature of reality?" and "What does it mean to exist?" • Epistemology: The st...
agentic
fable
11
true
[FABLE5_TRACE] <|system|> 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. <|user|> Implement 'Hybrid-Memory' swizzling. The engine uses both DRAM and Intel Optane (PMEM). T...
agentic
fable
22
true
[INPUT] [{"role": "system", "content": "You are an expert code editor. Given an instruction and original code, produce the edited code that satisfies the requirements. Write only the complete modified code in your response.\n\nBefore responding, reason through the problem in a <think> block."}, {"role": "user", "conten...
frontend
nextcoder
20
false
{"conversations": [{"from": "human", "value": "Write a Python generator function that yields batches of items from any iterable, where each batch is a list of up to N items. The last batch may be smaller than N."}, {"from": "gpt", "value": "```python\nfrom typing import Generator, Iterable, TypeVar\n\nT = TypeVar('T')\...
coding
codegen
9
false
{"conversations": [{"from": "human", "value": "Write a Rust function that takes a slice of strings, filters out empty strings, trims whitespace, converts to uppercase, deduplicates (preserving first occurrence order), and returns a Vec<String>."}, {"from": "gpt", "value": "```rust\nuse std::collections::HashSet;\n\nfn ...
coding
codegen
8
false
{"conversations": [{"from": "human", "value": "Write a Rust function that takes a slice of strings, filters out empty strings, trims whitespace, converts to uppercase, deduplicates (preserving first occurrence order), and returns a Vec<String>."}, {"from": "gpt", "value": "```rust\nuse std::collections::HashSet;\n\nfn ...
coding
codegen
8
false
[FABLE5_TRACE] <|system|> 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. <|user|> Create the 'Deep-Mine' Seismic Warning System. The UI mimics a 'rugged' mining terminal w...
agentic
fable
24
true
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Agentic-100K

Filtered CPU-built coding-agent SFT dataset.

Rows: 43,512

Domains

{ "agentic": 40867, "web": 2640, "coding": 5 }

Sources

{ "Nexlab/fable5-agentic-coding-sft": 25868, "thoughtworks/agentic-coding-trajectories": 14999, "AdhyanshVerma/html-css-js-cot": 2645 }

Filtering

  • schema-aware parsing
  • minimum text length
  • maximum sample length
  • coding signal
  • agentic/tool-use signal
  • debugging signal
  • testing signal
  • reasoning signal
  • web-development signal
  • exact deduplication
  • quality scoring
  • domain balancing
  • hard maximum of 100,000 rows

This is a derived dataset. Check the upstream dataset licenses and terms before redistribution or commercial use.

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