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| Pricing | Free | Free |
| Capabilities | 5 decomposed | 14 decomposed |
| Times Matched | 0 | 0 |
Evaluates language models on 70,000 multiple-choice questions where incorrect options were generated by language models and adversarially selected to fool machines while remaining obviously wrong to humans. The filtering process uses a two-stage approach: LLM-generated distractors are ranked by their ability to confuse models (measured via model accuracy on that specific question), then human annotators validate that the hard-for-models options remain easy for humans. This creates a dataset where model performance gaps vs human performance (95.6% human accuracy) directly measure commonsense reasoning gaps rather than dataset artifacts.
Unique: Uses adversarial filtering where distractors are selected based on measured model confusion rather than human-written plausibility, creating a dataset that specifically targets machine weaknesses while maintaining human interpretability. This two-stage LLM-generation + human-validation approach is more scalable than purely human-written distractors while maintaining higher quality than random negatives.
vs alternatives: Harder than SWAG (predecessor) because distractors are adversarially selected for model confusion, and more human-aligned than synthetic reasoning datasets because human accuracy (95.6%) validates that hard-for-models questions remain easy for humans.
Tests models' ability to predict the next action or outcome in video-like scenarios involving physical activities (cooking, sports, repairs, etc.). Each question presents a sequence of events and asks which of four options most plausibly continues the sequence. The dataset uses real-world video captions and activities, grounding commonsense in concrete physical interactions rather than abstract reasoning. Models must understand object physics, tool usage, body mechanics, and temporal causality to select correct continuations.
Unique: Grounds commonsense reasoning in real video captions and activities rather than synthetic scenarios, ensuring that correct answers reflect actual physical outcomes humans observe. The adversarial filtering specifically targets models that fail at physical reasoning while humans succeed, creating a diagnostic tool for embodied understanding gaps.
vs alternatives: More grounded in real-world physics than abstract reasoning benchmarks like MMLU, and more challenging than simple video QA because distractors are adversarially selected to confuse models specifically about physical causality.
Assesses models' understanding of social dynamics, conversational context, and temporal sequences in everyday scenarios. Questions test whether models can reason about social norms (what's appropriate to say/do), emotional reactions, and cause-effect relationships across time. The dataset includes scenarios involving interpersonal interactions, social etiquette, and temporal ordering of events. Adversarial distractors specifically target models that misunderstand social context or temporal logic while remaining obviously wrong to humans.
Unique: Combines social understanding with temporal reasoning in a single benchmark, testing whether models understand not just what happens next but why it happens and how humans would react. Adversarial filtering specifically targets models that fail at social reasoning while humans succeed.
vs alternatives: More comprehensive than social bias benchmarks because it tests positive social understanding (what's appropriate) rather than just detecting bias, and more grounded than abstract reasoning datasets.
Provides a calibrated benchmark where human accuracy (95.6%) is known and adversarial filtering ensures that questions hard for machines remain easy for humans. This enables precise measurement of the performance gap between models and humans on commonsense reasoning. Researchers can use this gap to quantify progress toward human-level understanding and identify which types of commonsense reasoning (physical, social, temporal) show the largest model-human gaps.
Unique: Provides a human-calibrated baseline (95.6% accuracy) with adversarial filtering that ensures the gap is meaningful — questions hard for machines are easy for humans, so the gap reflects genuine commonsense reasoning deficits rather than dataset ambiguity. This enables precise measurement of progress toward human-level understanding.
vs alternatives: More interpretable than benchmarks without human baselines because the gap directly measures commonsense reasoning deficit, and more reliable than benchmarks where hard questions are hard for both humans and machines.
Provides a fixed, versioned dataset of 70,000 examples with consistent train/validation/test splits, enabling reproducible evaluation across models and time. The dataset is hosted on Hugging Face with version control, allowing researchers to cite specific versions and ensuring that benchmark results are comparable across papers. The fixed nature of the dataset (no dynamic generation or augmentation) means that model improvements reflect genuine capability gains rather than dataset variance.
Unique: Provides a fixed, versioned dataset on Hugging Face with explicit train/validation/test splits, enabling reproducible evaluation and fair comparison across models. The fixed nature ensures that improvements reflect genuine capability gains rather than dataset variance or adversarial augmentation at test time.
vs alternatives: More reproducible than dynamically-generated benchmarks because the dataset is fixed and versioned, and more comparable than benchmarks with multiple variants because all researchers use the same evaluation set.
GPT-4o processes text, images, and audio through a single transformer architecture with shared token representations, eliminating separate modality encoders. Images are tokenized into visual patches and embedded into the same vector space as text tokens, enabling seamless cross-modal reasoning without explicit fusion layers. Audio is converted to mel-spectrogram tokens and processed identically to text, allowing the model to reason about speech content, speaker characteristics, and emotional tone in a single forward pass.
Unique: Single unified transformer processes all modalities through shared token space rather than separate encoders + fusion layers; eliminates modality-specific bottlenecks and enables emergent cross-modal reasoning patterns not possible with bolted-on vision/audio modules
vs alternatives: Faster and more coherent multimodal reasoning than Claude 3.5 Sonnet or Gemini 2.0 because unified architecture avoids cross-encoder latency and modality mismatch artifacts
GPT-4o implements a 128,000-token context window using optimized attention patterns (likely sparse or grouped-query attention variants) that reduce memory complexity from O(n²) to near-linear scaling. This enables processing of entire codebases, long documents, or multi-turn conversations without truncation. The model maintains coherence across the full context through learned positional embeddings that generalize beyond training sequence lengths.
Unique: Achieves 128K context with sub-linear attention complexity through architectural optimizations (likely grouped-query attention or sparse patterns) rather than naive quadratic attention, enabling practical long-context inference without prohibitive memory costs
vs alternatives: Longer context window than GPT-4 Turbo (128K vs 128K, but with faster inference) and more efficient than Anthropic Claude 3.5 Sonnet (200K context but slower) for most production latency requirements
GPT-4o scores higher at 84/100 vs HellaSwag at 59/100. HellaSwag leads on ecosystem, while GPT-4o is stronger on quality.
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GPT-4o includes built-in safety mechanisms that filter harmful content, refuse unsafe requests, and provide explanations for refusals. The model is trained to decline requests for illegal activities, violence, abuse, and other harmful content. Safety filtering operates at inference time without requiring external moderation APIs. Applications can configure safety levels or override defaults for specific use cases.
Unique: Safety filtering is integrated into the model's training and inference, not a post-hoc filter; the model learns to refuse harmful requests during pretraining, resulting in more natural refusals than external moderation systems
vs alternatives: More integrated safety than external moderation APIs (which add latency and may miss context-dependent harms) because safety reasoning is part of the model's core capabilities
GPT-4o supports batch processing through OpenAI's Batch API, where multiple requests are submitted together and processed asynchronously at lower cost (50% discount). Batches are processed in the background and results are retrieved via polling or webhooks. Ideal for non-time-sensitive workloads like data processing, content generation, and analysis at scale.
Unique: Batch API is a first-class API tier with 50% cost discount, not a workaround; enables cost-effective processing of large-scale workloads by trading latency for savings
vs alternatives: More cost-effective than real-time API for bulk processing because 50% discount applies to all batch requests; better than self-hosting because no infrastructure management required
GPT-4o can analyze screenshots of code, whiteboards, and diagrams to understand intent and generate corresponding code. The model extracts code from images, understands handwritten pseudocode, and generates implementation from visual designs. Enables workflows where developers can sketch ideas visually and have them converted to working code.
Unique: Vision-based code understanding is native to the unified architecture, enabling the model to reason about visual design intent and generate code directly from images without separate vision-to-text conversion
vs alternatives: More integrated than separate vision + code generation pipelines because the model understands design intent and can generate semantically appropriate code, not just transcribe visible text
GPT-4o maintains conversation state across multiple turns, preserving context and building coherent narratives. The model tracks conversation history, remembers user preferences and constraints mentioned earlier, and generates responses that are consistent with prior exchanges. Supports up to 128K tokens of conversation history without losing coherence.
Unique: Context preservation is handled through explicit message history in the API, not implicit server-side state; gives applications full control over context management and enables stateless, scalable deployments
vs alternatives: More flexible than systems with implicit state management because applications can implement custom context pruning, summarization, or filtering strategies
GPT-4o includes built-in function calling via OpenAI's function schema format, where developers define tool signatures as JSON schemas and the model outputs structured function calls with validated arguments. The model learns to map natural language requests to appropriate functions and generate correctly-typed arguments without additional prompting. Supports parallel function calls (multiple tools invoked in single response) and automatic retry logic for invalid schemas.
Unique: Native function calling is deeply integrated into the model's training and inference, not a post-hoc wrapper; the model learns to reason about tool availability and constraints during pretraining, resulting in more natural tool selection than prompt-based approaches
vs alternatives: More reliable function calling than Claude 3.5 Sonnet (which uses tool_use blocks) because GPT-4o's schema binding is tighter and supports parallel calls natively without workarounds
GPT-4o's JSON mode constrains the output to valid JSON matching a provided schema, using constrained decoding (token-level filtering during generation) to ensure every output is parseable and schema-compliant. The model generates JSON directly without intermediate text, eliminating parsing errors and hallucinated fields. Supports nested objects, arrays, enums, and type constraints (string, number, boolean, null).
Unique: Uses token-level constrained decoding during inference to guarantee schema compliance, not post-hoc validation; the model's probability distribution is filtered at each step to only allow tokens that keep the output valid JSON, eliminating hallucinated fields entirely
vs alternatives: More reliable than Claude's tool_use for structured output because constrained decoding guarantees validity at generation time rather than relying on the model to self-correct
+6 more capabilities