Count tokens for GPT-4, Claude, Gemini and more. Paste any text or entire documents to see exact token usage before sending to an AI model.
Build structured, high-quality prompts for ChatGPT, Claude, and Gemini. Define role, context, task, format, and constraints in a guided form.
Convert large JSON datasets into clean, token-efficient AI prompts. Perfect for feeding structured data to ChatGPT, Claude, or Gemini without wasting context.
Transform CSV files and large tabular datasets into AI-ready prompts. Control which columns to include, row limits, and output format to stay within token budgets.
Generate professional system prompts for AI assistants, chatbots, and agents. Choose persona, tone, domain, and constraints to produce a production-ready system prompt instantly.
Calculate whether your text fits within any AI model's context window. Compare token usage across GPT-4o, Claude 3.5, Gemini 1.5 Pro, Llama 3, and more.
Base64 isn't encryption, but it's great for safely sending binary data (like images) as text. Use it to embed small icons directly in your CSS!
GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, Llama 3, Mistral — the AI landscape changes fast and choosing the right model for a task isn't obvious. The AI Model Comparator gives you a clean, side-by-side breakdown of context window size, input/output pricing, key strengths, response speed, and ideal use cases for every major LLM. Whether you're deciding which model to build on, comparing costs for a high-volume API use case, or just trying to understand the differences, this reference is updated regularly and free to use.
The comparator pulls structured data covering context window limits, published API pricing (input and output token rates), known strengths, and recommended use cases for each model. Data is sourced from official provider documentation and updated periodically.
LLM selection involves trade-offs between context window (how much input the model handles), quality (benchmark scores and real-world output quality), speed (tokens per second), cost (per-token API pricing), and availability (open-weight vs. API-only). No single model wins on all dimensions — the right choice depends on task type, volume, latency requirements, and budget.
The comparator data is updated periodically as providers release new models or change pricing. For the most current pricing, always verify on the provider's official pricing page before committing to production usage.
The comparator focuses on practical specs (pricing, context window, use cases) rather than academic benchmarks, which can be misleading for real-world tasks.
All calculations and data processing for this tool are performed locally in your browser. UtilToolkits does not send any of your data to an external server, ensuring your information remains private and secure.
Compare GPT-4o, Claude, Gemini, Llama, and Mistral side-by-side. Context window, pricing, strengths, and best use cases — updated 2026.
| Output/1M | Speed | Best for | Compare | ||||
|---|---|---|---|---|---|---|---|
| Gemini 1.5 Pro 1M token contextMultimodal | 1M | $1.25 | $5.00 | Fast | Massive documents, video analysis, multi-modal | ||
| Gemini 1.5 Flash Ultra-cheap1M context | 1M | $0.07 | $0.30 | Very Fast | Budget-friendly large-context tasks | ||
| Gemini 2.0 Flash Latest Gemini1M context | 1M | $0.10 | $0.40 | Very Fast | Agentic tasks, large-scale data processing | ||
| Claude 3.5 Sonnet Long contextWriting | Anthropic | 200k | $3.00 | $15.00 | Fast | Long documents, writing, nuanced reasoning | |
| Claude 3 Haiku Ultra-fastCheap | Anthropic | 200k | $0.25 | $1.25 | Ultra Fast | Real-time apps, summarization at scale | |
| Claude 3 Opus Highest qualityComplex reasoning | Anthropic | 200k | $15.00 | $75.00 | Slower | Research, complex multi-step tasks | |
| GPT-4o MultimodalCode | OpenAI | 128k | $2.50 | $10.00 | Fast | General-purpose, coding, vision tasks | |
| GPT-4o mini FastCheap | OpenAI | 128k | $0.15 | $0.60 | Very Fast | High-volume, cost-sensitive tasks | |
| Llama 3.1 405B Open weightsSelf-hostable | Meta (Open) | 128k | $3.00 | $3.00 | Variable | Privacy-focused, self-hosted deployments | |
| Mistral Large EuropeanMultilingual | Mistral | 128k | $2.00 | $6.00 | Fast | European data compliance, multilingual apps |
Pricing is approximate and subject to change. Always verify with the provider's current pricing page. Updated June 2026.