JATIN SIHAG jatinsihag2345

$ whoami
> Jatin Sihag — Frontier AI Engineer & Agent Benchmark Specialist
> Specializing in SWE-bench, TerminalBench, GAIA, RLVR Verifiers & Long-Horizon Failures

⚡ At a Glance

🔬 Core Focus & Engineering Specialization

I specialize in frontier AI evaluation, deterministic grading harnesses, and agent task synthesis. My work centers on creating rigorous, verifiable tasks that frontier models (GPT-4o, Claude 3.5 Sonnet, DeepSeek-R1/V3, Gemini 1.5/2.0) fail on—specifically in multi-step agentic trajectories and code intelligence.

🎯 Long-Horizon Agent Trajectories (15–30+ steps): Designing multi-turn interactive environments testing context retention, backtracking, tool error recovery, and constraint stability.
💻 Terminal & OS Benchmarks (TerminalBench / OSWorld style): Authoring realistic Linux/CLI debugging scenarios, system administration puzzles, and network edge cases evaluated with isolated Docker containers and deterministic pytest assertions.
🛠️ SWE-bench Task Creation: Extracting real-world GitHub issues and PRs into standardized SWE-bench instances (clean base commit, problem statement, reproducible fail-to-pass test patches).
🧪 RLVR (Reinforcement Learning with Verifiable Rewards): Engineering automated deterministic grading environments where model outputs can be verified programmatically without human ambiguity.
🚨 Model Red-Teaming & Failure Taxonomy: Systematic failure mode categorization (sycophancy, context window degradation, tool loop hallucination, subtle numerical/boundary drift).

🏗️ Evaluation Harness Architecture

                 ┌──────────────────────────────────────┐
                 │  Problem Definition & Target State   │
                 └──────────────────┬───────────────────┘
                                    │
                                    ▼
       ┌────────────────────────────────────────────────────────┐
       │             Isolated Sandbox Execution                 │
       │  • Ephemeral Docker Container (Ubuntu/Alpine)          │
       │  • Corrupt State Injection (Git/Sysadmin/Networking)   │
       │  • Strict Non-Interactive Environment Boundaries       │
       └────────────────────────────┬───────────────────────────┘
                                    │
                         Observation Loop (Tool Execution)
                                    │
                                    ▼
       ┌────────────────────────────────────────────────────────┐
       │             Autonomous Agent Reasoning                 │
       │  • Multi-Turn Tool Loop (ReAct / Function Calling)     │
       │  • Trajectory Telemetry (Tokens, Latency, Commands)    │
       └────────────────────────────┬───────────────────────────┘
                                    │
                        Completion Signal (EXIT)
                                    │
                                    ▼
       ┌────────────────────────────────────────────────────────┐
       │            Deterministic Grading Engine                │
       │  • Fail-to-Pass (F2P) & Pass-to-Pass (P2P) Assertions  │
       │  • Negative Constraint Violation Auditor               │
       │  • Exit Code & File System Integrity Check             │
       └────────────────────────────┬───────────────────────────┘
                                    │
                                    ▼
                  [Pass@1 Report & Cognitive Metrics]

🏆 Flagship Evaluation Suites & Benchmarks

🖥️ terminal-bench-eval

Sandboxed CLI & OS Agent Benchmark Harness

8 Production Tasks: Corrupt Git HEADs, socket TIME_WAIT deadlocks, C ABI mismatches, DNS loops, SQLite WAL locks.
Sandboxing: Isolated Docker & subprocess execution with 100% reference Oracle verification.
Leaderboard: Claude 3.5 Sonnet (75.0%), GPT-4o (62.5%), DeepSeek-V3 (62.5%).

🛠️ swe-bench-task-forge

SWE-bench Task Authoring & Verification Pipeline

3-Stage Protocol: Automated Fail-to-Pass (F2P) & Pass-to-Pass (P2P) test isolation verification.
Patch Purity: Rigorous check preventing model patches from modifying test suites.
Verified Instances: Pre-bundled tasks for requests, flask, and scikit-learn + JSONL exporter.

🧠 long-horizon-agent-stress-bench

Cognitive Failure Taxonomy & Degradation Suite

15–30+ Step Tasks: Stress-testing frontier agent reasoning over deep tool-calling trajectories.
Failure Taxonomy: Automated detection of Context Window Drift, Circular Retry Loops, and State Desync.
Empirical Analysis: Published failure distributions across 120 trajectories for Claude, GPT, and DeepSeek.

🧮 rlvr-math-verifiers

RLVR Deterministic Reward Environments

Verifiable Rewards: High-throughput mathematical reward signals ($r \in \{0.0, 1.0\}$) for PPO & GRPO.
Symbolic Engine: Handles nested \boxed{}, GSM8K syntax, rational fractions, and float tolerances.
Benchmarks: Tested on MATH-500 and GSM8K-Hard for reasoning models (o1, DeepSeek-R1, Qwen-2.5-Math).

🌍 gaia-agent-eval-harness

GAIA Multi-Modal Agent Benchmark Suite

Levels 1–3: Evaluates multi-modal synthesis (text, tables, PDFs) and web navigation.
Quasi-Exact Matching: Implements official GAIA numerical tolerance and unordered set matching.
Leaderboard: Claude 3.5 Sonnet (49.1%), GPT-4o (44.2%), Gemini 1.5 Pro (40.6%).

🔬 cot-reasoning-auditor

Chain-of-Thought Logical Coherence Auditor

Reasoning Trace Auditing: Detects Premise Hallucination, Circular Reasoning, and Premature Conclusions.
Backtrack Scoring: Evaluates self-correction efficacy and overthinking token penalties.
Report: Tested on reasoning traces from DeepSeek-R1, OpenAI o1, and QwQ-32B.

🛡️ model-redteam-atlas

Adversarial Red-Teaming & Safety Suite

250+ Vectors: Testing Indirect Prompt Injections, System Prompt Leaks, Canary Token extraction, and Sycophancy.
Automated Scanner: Rule-based refusal boundary auditor and vulnerability scoring engine.
Safety Leaderboard: Benchmarked defense rates across Claude 3.5 Sonnet (95.7%), GPT-4o (92.9%), and DeepSeek-V3.

🔧 agentic-tool-use-eval

Function Calling & Multi-Tool Benchmark

Schema Compliance: Enforces strict JSON function calling, parameter types, and enum restrictions.
Hallucination Guard: Automatically flags phantom arguments invented by models.
Multi-Tool Chains: Interdependent workflows combining SQL, Calculator, Filesystem, and REST APIs.

📦 Open-Source Libraries & Community Ecosystem

📦 llm-eval-toolkit

Modular Python SDK for Deterministic Grading & AST Diffing

Deterministic Scoring: Exact match normalizers, LaTeX boxed extractor, and epsilon tolerance numeric verifiers.
AST Semantic Diffing: Structural Python syntax tree equivalence ignoring docstrings and whitespace.
Sandboxed Execution: Subprocess runner with strict memory limits and execution timeout enforcement.
Token Cost Telemetry: Pre-configured financial pricing auditor for GPT-4o, Claude 3.5, and DeepSeek-R1.

🌟 awesome-ai-evaluations

Curated Taxonomy of Frontier AI & Agent Benchmarks

Comprehensive Coverage: SWE-bench, TerminalBench, GAIA, WebArena, MATH-500, OSWorld, HarmBench.
Benchmark Matrix: Modality breakdown, verifier classifications (Oracle, Symbolic, AST), and paper citations.
Methodology Guides: Best practices for RLVR reward modeling, contamination detection, and sandboxing.

📊 Comprehensive Benchmark Design Matrix

Benchmark Domain	Environment Type	Primary Failure Modes Tested	Verification Method	Solvability
CLI / Sysadmin	Docker (Alpine / Ubuntu)	File descriptor leaks, missing ENV vars, socket timeouts	Deterministic exit code & FS assertion	100% (Oracle)
SWE (Code Fixes)	Git repo + virtualenv	Regression in unrelated tests, partial patch application	Pytest Fail-to-Pass & Pass-to-Pass	100% (Gold)
Long-Horizon Tool Use	Multi-API Mock Server	Tool argument drift, context window overflow, state loss	State-machine log auditor	100% (Oracle)
RLVR Reasoning	Python Sandbox	Step-by-step logic errors, boundary drift, rational equivalence	Pure Python AST & fraction match	100% (Verified)
GAIA Multi-Modal	Multi-Tool Sandbox	Multi-modal comprehension, table extraction, multi-hop lookup	Quasi-Exact Numerical & Set match	Deterministic
CoT Reasoning Trace	Token Trace Parser	Premise hallucination, circular loops, premature termination	Step-by-step Logic Auditor	Deterministic
Red-Teaming / Safety	Adversarial Harness	Jailbreaks, prompt leaks, sycophancy, tool privilege escalation	Refusal classifier & canary detector	Automated
Tool Orchestration	Mock Services API	Argument hallucinations, parameter type mismatches	JSON Schema Validator	Deterministic

🛠️ Technical Stack & Tooling

Layer	Technologies & Tooling
Core Languages	`Python 3.10+`, `Bash / Shell Scripting`, `SQL`, `C / C++ (debugging)`
Sandbox & Infrastructure	`Docker`, `Linux Internals`, `Systemd`, `Cgroups`, `POSIX Sockets`, `Git`
Testing & Determinism	`Pytest`, `Subprocess Sandboxing`, `SymPy`, `AST Analysis`, `Regex Parsers`
Agent Frameworks & SDKs	`LiteLLM`, `vLLM`, `LangChain`, `LangGraph`, `OpenAI API`, `Anthropic SDK`
Evaluation Toolkits	`SWE-bench CLI`, `OpenAI Evals`, `DeepEval`, `Promptfoo`, `Inspect AI`
Data & Datasets	`Hugging Face (datasets, transformers)`, `JSONL Pipelines`, `Pandas`, `NumPy`

🏆 GitHub Official Achievements & Badges

Verified profile milestones and developer badges earned across frontier AI benchmark repositories.

Badge	Level / Multiplier	Requirement Satisfied
🦈 Pull Shark	Silver (x2)	16 merged pull requests into default branches
⚡ Quickdraw	Unlocked	Issue/PR closed within 5 minutes of opening
🪂 YOLO	Unlocked	Pull request merged directly without review block
🧠 Galaxy Brain	Silver (x2)	8 accepted Q&A answers in public discussions
👥 Pair Extraordinaire	Bronze (x1)	Merged co-authored commits via pull requests

👉 Inspect live verification badges on github.com/jatinsihag2345?tab=achievements

📈 GitHub Telemetry & Activity Stats

📬 Contact & Engagements

💼 Available for AI Evaluation Specialist, Task Authoring, and Model Red-Teaming contracts.
🎯 Platforms: Mercor, Turing, Scale AI, Outlier, and frontier AI research labs.
✉️ Direct Email: jatinsihag234@gmail.com
🌐 GitHub: github.com/jatinsihag2345

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