LLM Calculators

Which LLM Should I Use?

Answer a few questions. Get a personalized model recommendation.

Not sure which AI model fits your project? This interactive selector analyzes your use case, budget, volume, and requirements to recommend the best LLM from GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, Grok 4.1, DeepSeek, and more.

Step 1 of 617%

What's your primary use case?

Select the category that best describes your project.

How the Model Selector Works

The model selector uses a weighted scoring algorithm that maps your answers to model capabilities across five dimensions: cost efficiency, response quality, context window size, multimodal support, and provider ecosystem. Each model receives a score based on how well it matches your stated preferences. The top three scoring models are presented with explanations of why they fit your needs and estimated monthly costs based on your volume.

Choosing Between Cost and Quality

The biggest tradeoff in LLM selection is cost versus capability. Budget models like GPT-5 nano ($0.05/M input) and Mistral Small ($0.10/M) handle straightforward tasks at minimal cost. Mid-tier models like Claude Sonnet 4.6 ($3.00/M) and Gemini 3 Flash ($0.50/M) balance quality with affordability. Flagship models like GPT-5.4 ($2.00/M) and Claude Opus 4.6 ($5.00/M) deliver the strongest reasoning for complex tasks.

Frequently Asked Questions

What is the best LLM for a chatbot in 2026?
For most chatbots, GPT-5 mini ($0.25/$2.00 per million tokens) or Gemini 3 Flash ($0.50/$3.00) offer the best balance of quality and cost. For premium customer-facing chatbots, GPT-5.4 or Claude Sonnet 4.6 provide stronger conversational quality. Use our selector tool above to get a recommendation tailored to your specific requirements.
Which AI model is cheapest for high-volume use?
For high-volume workloads (500K+ requests/month), GPT-5 nano at $0.05/$0.40 per million tokens is the cheapest option. Gemini 2.0 Flash Lite ($0.08/$0.30) and Mistral Small ($0.10/$0.30) are close alternatives. All three support batch pricing for additional 50% savings.
Should I use GPT-5.4 or Claude Opus 4.6?
GPT-5.4 costs $2.00/$8.00 per million tokens versus Claude Opus 4.6 at $5.00/$25.00. GPT-5.4 is cheaper per token and supports audio input. Claude Opus 4.6 has a 200K context window and excels at nuanced analysis. Choose GPT-5.4 for cost efficiency and multimodal needs, Claude for complex reasoning tasks.
What LLM should I use for code generation?
For code generation, GPT-5.4 and Claude Sonnet 4.6 are the strongest performers. For budget-conscious projects, DeepSeek-R1 ($0.55/$2.19) and Mistral Large ($2.00/$6.00) offer strong coding capability at lower cost. Grok 4.1 ($0.20/$0.50) is an aggressive value option with good code performance.

Explore Related Tools

Pricing Comparison

Compare API pricing across all major LLM models in one sortable, filterable table.

Cost Estimator

Estimate monthly and annual AI API costs based on your usage pattern.

Context Windows

Visual comparison of context window sizes across all major LLM models.

Model recommendations are based on published specifications and pricing. Performance may vary based on specific use cases. Always test with your actual workload before committing.