LLM Models

Selecting the right Large Language Model (LLM) for your application is a critical decision that impacts performance, cost, and user experience. This guide provides a comprehensive comparison of leading LLMs to help you make an informed choice based on your specific requirements.

How to Select the Right LLM

When choosing an LLM, consider these key factors:

  1. Task Complexity: For complex reasoning, research, or creative tasks, prioritize models with high accuracy scores (8-10), even if they’re slower or more expensive. For simpler, routine tasks, models with moderate accuracy (6-8) but higher speed may be sufficient.

  2. Response Time Requirements: If your application needs real-time interactions, prioritize models with speed ratings of 8-10. Customer-facing applications generally benefit from faster models to maintain engagement.

  3. Context Needs: If your application processes long documents or requires maintaining extended conversations, select models with context window ratings of 8 or higher. Some specialized tasks might work fine with smaller context windows.

  4. Budget Constraints: Cost varies dramatically across models. Free and low-cost options (0-2 on our relative scale) can be excellent for startups or high-volume applications, while premium models (5+) might be justified for mission-critical enterprise applications where accuracy is paramount.

  5. Specific Capabilities: Some models excel at particular tasks like code generation, multimodal understanding, or multilingual support. Review the use cases to find models that specialize in your specific needs.

The ideal approach is often to start with a model that balances your primary requirements, then test alternatives to fine-tune performance. Many organizations use multiple models: premium options for complex tasks and more affordable models for routine operations.

Vendor Overview

OpenAI: Offers the most diverse range of models with industry-leading capabilities, though often at premium price points, with particular strengths in reasoning and multimodal applications.

Anthropic (Claude): Focuses on highly reliable, safety-aligned models with exceptional context length capabilities, making them ideal for document analysis and complex reasoning tasks.

Google: Provides models with impressive context windows and competitive pricing, with the Gemini series offering particularly strong performance in creative and analytical tasks.

Perplexity: Specializes in research-oriented models with unique web search integration, offering free access to powerful research capabilities and real-time information.

Other Vendors: Offer open-source and specialized models that provide strong performance at minimal or no cost, making advanced AI accessible for deployment in resource-constrained environments.

OpenAI Models

ModelSpeedAccuracyContext WindowRelative CostUse Cases
GPT-4o9993• Multimodal assistant for text, audio, and images
• Complex reasoning and coding tasks
• Cost-sensitive deployments
GPT-4o-Mini10891• Real-time chatbots and high-volume applications
• Long-context processing
• General AI assistant tasks where affordability and speed are prioritized
GPT-4 Vision5955• Image analysis and description
• High-accuracy general assistant tasks
• Creative and technical writing with visual context
o161094• Tackling highly complex problems in science, math, and coding
• Advanced strategy or research planning
• Scenarios accepting high latency/cost for superior accuracy
o1 Mini8891• Coding assistants and developer tools
• Reasoning tasks that need efficiency over broad knowledge
• Applications requiring moderate reasoning but faster responses
o3 Mini9991• General-purpose chatbot for coding, math, science
• Developer integrations
• High-throughput AI services
GPT-4.5510910• Mission-critical AI tasks requiring top-tier intelligence
• Highly complex problem solving or content generation
• Multi-modal and extended context applications

Anthropic (Claude) Models

ModelSpeedAccuracyContext WindowRelative CostUse Cases
Claude 3.7 Sonnet8992• Advanced coding and debugging assistant
• Complex analytical tasks
• Fast turnaround on detailed answers
Claude 3.5 Sonnet7892• General-purpose AI assistant for long documents
• Coding help and Q&A
• Everyday reasoning tasks with high reliability and alignment
Claude 3.5 Sonnet Multi-Modal7892• Image understanding in French or English
• Multi-modal customer support
• Research assistants combining text and visual data
Claude Opus6799• High-precision analysis for complex queries
• Long-form content summarization or generation
• Enterprise scenarios requiring strict reliability

Google Models

ModelSpeedAccuracyContext WindowRelative CostUse Cases
Gemini 2.0 Pro71085• Expert code generation and debugging
• Complex prompt handling and multi-step reasoning
• Cutting-edge research applications requiring maximum accuracy
Gemini 2.0 Flash99101• Interactive agents and chatbots
• General enterprise AI tasks at scale
• Large-context processing up to ~1M tokens
Gemini 2.0 Flash Thinking Mode89102• Improved reasoning in QA and problem-solving
• Explainable AI scenarios
• Tasks requiring a balance of speed and reasoning accuracy
Gemini 1.5 Pro79101• Sophisticated coding and mathematical problem solving
• Processing extremely large contexts
• Use cases tolerating higher cost/latency for higher quality
Gemini 1.5 Flash97101• Real-time assistants and chat services
• Handling lengthy inputs
• General tasks requiring decent reasoning at minimal cost
Gemma 7B It10641• Italian-language chatbot and content generation
• Lightweight reasoning and coding help
• On-device or private deployments
Gemma2 9B It9751• Multilingual assistant
• Developer assistant on a budget
• Text analysis with moderate complexity

Perplexity Models

ModelSpeedAccuracyContext WindowRelative CostUse Cases
Perplexity10741• Quick factual Q&A with web citations
• Fast information lookups
• General knowledge queries for free
Perplexity Deep Research39101• In-depth research reports on any topic
• Complex multi-hop questions requiring reasoning and evidence
• Scholarly or investigative writing assistance

Open Source Models

ModelSpeedAccuracyContext WindowRelative CostUse Cases
DeepSeek R17991• Advanced reasoning engine for math and code
• Integrating into Retrieval-Augmented Generation pipelines
• Open-source AI deployments needing strong reasoning
Llama 3.3 70B8991• Versatile technical and creative assistant
• High-quality AI for smaller setups
• Resource-efficient deployment
Mixtral 8×7B 32K9881• General-purpose open-source chatbot
• Long document analysis and retrieval QA
• Scenarios needing both efficiency and quality on modest hardware