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| Pricing | Free | Free |
| Capabilities | 10 decomposed | 13 decomposed |
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Generates augmented test suites for MBPP problems by creating 35x more test cases than the original benchmark through systematic edge-case and boundary-condition generation. The system maintains structured metadata for each problem including base_input (original tests), plus_input (extended tests), contract (input validation constraints), atol (floating-point tolerance), canonical_solution (ground truth), and entry_point (function name). This architectural separation enables rigorous detection of fragile solutions that pass shallow tests but fail on edge cases, addressing the fundamental limitation that original MBPP's ~3 tests per task miss correctness issues.
Unique: Provides 35x test case multiplier specifically for MBPP (378 tasks) with structured metadata separation (base_input vs plus_input) and input validation contracts, enabling systematic edge-case coverage that original MBPP's ~3 tests per task cannot achieve. Uses canonical_solution ground truth execution to dynamically calibrate timeouts and floating-point tolerances per problem.
vs alternatives: Significantly more rigorous than original MBPP (3→105 tests per task average) and HumanEval+ (80x multiplier) while maintaining Python-specific focus; catches correctness issues that shallow benchmarks miss but requires more computational resources for evaluation.
Executes arbitrary Python code generated by LLMs in isolated processes with enforced resource limits and system call restrictions to prevent malicious or buggy code from crashing the evaluation framework. The untrusted_check function spawns separate processes via multiprocessing with shared memory IPC, applies memory limits (default 4GB via EVALPLUS_MAX_MEMORY_BYTES environment variable), dynamically calculated time limits based on ground truth execution time, I/O suppression via swallow_io to prevent output pollution, and reliability_guard to disable dangerous system calls. This architecture prevents code injection, infinite loops, memory exhaustion, and filesystem access while maintaining execution fidelity for correctness evaluation.
Unique: Implements multi-layer isolation using process-level separation (multiprocessing), memory limits (EVALPLUS_MAX_MEMORY_BYTES), dynamic timeout calculation from canonical_solution execution, I/O suppression (swallow_io), and system call restrictions (reliability_guard). This combination prevents both accidental crashes and intentional attacks while maintaining execution fidelity for correctness evaluation.
vs alternatives: More robust than simple try-catch approaches because it uses OS-level process isolation rather than Python-level exception handling; prevents infinite loops and memory exhaustion that would crash a single-process evaluator, though with higher latency than in-process execution.
Preprocesses LLM-generated code to normalize formatting, remove extraneous content, and extract the target function before execution. The sanitize module (evalplus/sanitize.py) handles variable formatting inconsistencies, removes comments and docstrings that may interfere with parsing, extracts the function matching the entry_point name, and validates syntax before execution. This ensures that evaluation results reflect code correctness rather than formatting quirks or LLM hallucinations like extra imports or wrapper code. The sanitization pipeline is essential because different LLMs produce code with different indentation, naming conventions, and structural patterns that would otherwise cause false negatives.
Unique: Implements multi-stage sanitization pipeline that separates formatting normalization (indentation, whitespace) from structural extraction (entry_point function isolation) and validation (syntax checking). Uses AST-based function extraction rather than regex, ensuring robust handling of complex code structures and nested functions.
vs alternatives: More robust than simple regex-based extraction because it uses Python's ast module for structural parsing; handles edge cases like nested functions, decorators, and complex indentation that regex approaches would miss. Enables fair comparison across LLM models with different output conventions.
Provides unified interface to generate code from 8+ LLM backends including vLLM, HuggingFace, OpenAI, Anthropic, Google Gemini, AWS Bedrock, and Ollama. The provider architecture (evalplus/provider/) abstracts backend-specific API details behind a common interface, handling authentication, request formatting, response parsing, and error handling for each provider. This enables researchers to benchmark code generation across different models and providers without rewriting evaluation code. The codegen module (evalplus/codegen.py) orchestrates the generation pipeline: problem specification → prompt formatting → LLM call → response extraction → sanitization → evaluation.
Unique: Implements provider abstraction layer that unifies 8+ LLM backends (vLLM, HuggingFace, OpenAI, Anthropic, Gemini, Bedrock, Ollama) behind a common interface, enabling single-codebase evaluation across local and cloud models. Each provider handles authentication, request formatting, and response parsing independently, allowing researchers to swap backends without modifying evaluation logic.
vs alternatives: More comprehensive than single-provider frameworks (e.g., OpenAI-only evaluators) because it supports both cloud APIs and self-hosted models; enables cost-benefit analysis between providers and avoids vendor lock-in. Abstraction layer reduces code duplication compared to implementing each provider separately.
Computes pass@k metrics by generating multiple code samples per problem and calculating the probability that at least one sample passes all tests. The metric is calculated as: pass@k = 1 - (C(n-c, k) / C(n, k)) where n is total samples, c is passing samples, and k is the sample count. This enables evaluation of model reliability: pass@1 measures single-shot accuracy, while pass@10 or pass@100 measures whether the model can eventually generate correct code. The framework aggregates results across all problems to produce dataset-level pass@k scores, enabling comparison of models' code generation reliability.
Unique: Implements pass@k metric using combinatorial formula (1 - C(n-c,k)/C(n,k)) rather than empirical sampling, enabling exact calculation without Monte Carlo approximation. Supports configurable k values and aggregation across problems, enabling multi-level analysis (per-problem, per-category, dataset-wide).
vs alternatives: More statistically rigorous than simple accuracy metrics because it accounts for sampling variance and model reliability; enables fair comparison between models with different single-shot accuracy but similar pass@k. Combinatorial calculation is faster and more precise than empirical sampling approaches.
Measures code efficiency using CPU instruction counting rather than wall-clock time, enabling reproducible performance evaluation across different hardware. The EvalPerf dataset generates performance-exercising inputs with exponential scaling (2^1 to 2^26 elements) to stress-test algorithmic complexity. The profiling pipeline uses Linux perf counters to measure CPU instructions, filters tasks based on profile size, compute cost, coefficient of variation, and performance clustering to select representative benchmarks. This approach isolates algorithmic efficiency from hardware variance, enabling rigorous comparison of code quality across models and implementations.
Unique: Uses CPU instruction counting via Linux perf counters rather than wall-clock time, enabling reproducible performance evaluation independent of hardware variance. Generates performance-exercising inputs with exponential scaling (2^1 to 2^26) to stress-test algorithmic complexity, and filters tasks based on profile size, compute cost, and coefficient of variation to select representative benchmarks.
vs alternatives: More reproducible than wall-clock timing because instruction counts are hardware-independent; enables fair comparison across different machines and cloud environments. Exponential input scaling reveals algorithmic complexity issues that constant-size inputs would miss, providing deeper insight into code quality.
Organizes MBPP+ problems as structured JSON with metadata fields: base_input (original test cases), plus_input (extended test cases), contract (input validation constraints), atol (floating-point tolerance), canonical_solution (ground truth implementation), and entry_point (function name). The dataset management system (evalplus/data/) loads problems from JSON, validates metadata consistency, and provides programmatic access to test cases and solutions. This structured approach enables systematic evaluation: problems can be filtered by category, difficulty, or test coverage; test cases can be aggregated across base and plus inputs; and metadata enables reproducible evaluation across different tools and frameworks.
Unique: Implements structured JSON-based dataset organization with explicit separation of base_input (original tests) and plus_input (extended tests), enabling selective evaluation and test coverage analysis. Metadata includes contract (input validation), atol (floating-point tolerance), canonical_solution, and entry_point, providing complete problem specification for reproducible evaluation.
vs alternatives: More structured than flat test files because metadata is explicitly organized and queryable; enables filtering, aggregation, and analysis that would be difficult with unstructured test data. JSON format is human-readable and tool-agnostic, supporting integration with external evaluation frameworks.
Provides CLI tools (evalplus.evaluate, evalplus.codegen, evalplus.evalperf, evalplus.sanitize) that orchestrate the complete evaluation workflow: code generation → sanitization → correctness evaluation → optional performance evaluation. The evaluate command executes generated code against MBPP+ test suites with configurable timeouts and memory limits, producing pass@k metrics and detailed result logs. The codegen command generates code from specified LLM providers. The evalperf command measures performance via instruction counting. The sanitize command preprocesses code before evaluation. This modular CLI design enables researchers to run evaluation pipelines without writing custom code, supporting reproducible benchmarking and result sharing.
Unique: Implements modular CLI tools (evaluate, codegen, evalperf, sanitize) that can be chained together or run independently, enabling flexible evaluation workflows. Each tool handles a specific stage of the pipeline (generation, sanitization, evaluation, performance measurement), allowing users to customize workflows without writing code.
vs alternatives: More user-friendly than programmatic APIs for researchers who prefer command-line tools; enables reproducible evaluation without custom code. Modular design allows selective use of components (e.g., evaluate without codegen) for flexibility.
+2 more capabilities
Mistral Large processes up to 128,000 tokens in a single context window, enabling analysis of entire codebases, long documents, or multi-turn conversations without context truncation. The architecture uses optimized attention mechanisms (likely grouped-query attention based on Mistral's prior work) to maintain computational efficiency while supporting this extended context, allowing developers to maintain coherent reasoning across large information volumes without manual chunking or sliding-window strategies.
Unique: 128K context window with grouped-query attention optimization enables full-codebase and full-document analysis without external retrieval, differentiating from GPT-4's 128K (which uses standard attention) through computational efficiency gains that reduce latency penalty
vs alternatives: Larger than Claude 3.5 Sonnet's 200K context but more cost-efficient per token than GPT-4o's extended context for most enterprise use cases due to optimized attention architecture
Mistral Large implements function calling through a schema-based interface where developers define tool signatures in JSON Schema format, and the model outputs structured function calls that can be directly dispatched to registered handlers. The implementation uses constrained decoding to ensure valid JSON output matching the provided schema, preventing malformed function calls and enabling reliable tool orchestration without post-processing validation.
Unique: Uses constrained decoding with JSON Schema validation to guarantee valid function calls without post-processing, whereas competitors like GPT-4 rely on post-hoc validation of model output, reducing error rates and enabling direct dispatch
vs alternatives: More reliable than Claude's tool_use format for complex multi-step workflows because constrained decoding prevents malformed calls, and simpler to integrate than OpenAI's function calling which requires additional validation layers
Mistral Large scores higher at 77/100 vs MBPP+ at 65/100.
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Mistral Large can be deployed on-premises or in private cloud environments, enabling organizations to maintain data sovereignty and avoid sending sensitive information to external APIs. Self-hosted deployments support custom fine-tuning on proprietary datasets, enabling domain-specific optimization without sharing training data with Mistral. Deployment uses standard container formats (Docker) and supports multiple hardware backends (NVIDIA GPUs, AMD ROCm, Intel Gaudi).
Unique: Supports full self-hosted deployment with custom fine-tuning on proprietary data, enabling organizations to maintain complete control over model behavior and data, whereas most competitors restrict fine-tuning to managed services
vs alternatives: More flexible than OpenAI's fine-tuning (which is API-only) and more cost-effective than Claude for high-volume on-premises deployments due to lower licensing costs
Mistral Large achieves performance competitive with GPT-4o and Claude 3.5 Sonnet on major reasoning benchmarks including MMLU (84.0%), HumanEval, and MATH, indicating comparable capability for complex reasoning, code generation, and mathematical problem-solving. This performance is achieved with a 123B parameter model, making it more efficient than larger competitors in terms of inference cost and latency.
Unique: Achieves GPT-4o and Claude 3.5 Sonnet-level performance on major benchmarks with a 123B parameter model, enabling competitive reasoning capability at lower inference cost due to smaller model size and optimized architecture
vs alternatives: More cost-efficient than GPT-4o and Claude 3.5 Sonnet for equivalent reasoning performance, making it ideal for cost-sensitive applications where benchmark-level performance is sufficient
Mistral Large exposes temperature and top-p (nucleus sampling) parameters to control the randomness and diversity of generated outputs. Temperature scales the logit distribution (higher = more random), while top-p limits sampling to the smallest set of tokens with cumulative probability ≥ p. These parameters enable tuning the model's behavior from deterministic (temperature=0) to highly creative (temperature=2.0), allowing builders to balance consistency and diversity for different use cases.
Unique: Exposes temperature and top-p parameters with standard semantics, enabling fine-grained control over output diversity and consistency without model retraining
vs alternatives: Standard parameter set comparable to GPT-4o and Claude, with no unique advantages but consistent behavior across models
Mistral Large can be constrained to output only valid JSON matching a provided schema, using constrained decoding to enforce structural validity at generation time rather than post-processing. This ensures every generated token respects the schema constraints, preventing partial or malformed JSON and enabling reliable downstream parsing without error handling for invalid output.
Unique: Enforces schema compliance at token generation time using constrained decoding, guaranteeing valid JSON output without post-processing, whereas most competitors (including GPT-4) generate JSON then validate, allowing invalid output to be produced
vs alternatives: More efficient than Claude's JSON mode because validation happens during generation rather than after, eliminating retry loops for invalid output and reducing latency for structured extraction tasks
Mistral Large is trained on multilingual data and maintains reasoning capability across 10+ languages including English, French, Spanish, German, Italian, Portuguese, Dutch, Russian, Chinese, Japanese, and Arabic. The model uses a shared embedding space and unified transformer architecture rather than language-specific branches, enabling cross-lingual transfer and reasoning without language-specific fine-tuning.
Unique: Unified transformer architecture with shared embeddings across 10+ languages enables consistent reasoning quality and cross-lingual transfer, whereas competitors often use separate language-specific models or language adapters that add latency
vs alternatives: More efficient than running separate language models for each language, and maintains better cross-lingual reasoning than GPT-4o which uses separate tokenizers per language
Mistral Large uses a distinct system prompt format optimized for instruction following, where system instructions are formatted as structured directives that the model interprets with higher fidelity than standard text prompts. The architecture includes special tokens and attention patterns that prioritize system instructions over user input, enabling more reliable behavior control and reducing prompt injection vulnerabilities.
Unique: Dedicated system prompt format with special tokens and attention masking prioritizes instructions over user input, reducing prompt injection risk and improving instruction adherence vs standard chat templates used by competitors
vs alternatives: More robust instruction following than GPT-4o's system message format because special tokenization prevents user input from overriding system directives, and simpler than Claude's system prompt which requires careful phrasing to avoid conflicts
+5 more capabilities