comparison
LLM Model Comparison: GPT-5 vs Claude vs Gemini vs Llama (2026)
Side-by-side comparison of the top 8 frontier and frontier-adjacent LLMs available in April 2026: GPT-5, GPT-5 mini, Claude Opus 4.6, Claude Sonnet 4.5, Claude Haiku 4.5, Gemini 2.5 Pro, Gemini 2.5 Flash, and Llama 3.3 405B. Compare context window, pricing, modality, agentic capabilities, knowledge cutoff, and recommended use cases.
| Feature | GPT-5 OpenAI flagship reasoner | GPT-5 mini Cheap, fast routing model | Claude Opus 4.6 Anthropic top-tier coding/reasoning | Claude Sonnet 4.5 Workhorse — Pareto frontier | Claude Haiku 4.5 Fast, efficient, instant | Gemini 2.5 Pro Google with massive context | Gemini 2.5 Flash Fastest big-context option | Llama 3.3 405B Best open-weights model |
|---|---|---|---|---|---|---|---|---|
| Context Window | 1M tokens | 400K tokens | 1M tokens | 1M tokens | 500K tokens | 2M tokens | 1M tokens | 128K tokens |
| Input Price | $5.00 / 1M tok | $0.30 / 1M tok | $15.00 / 1M tok | $3.00 / 1M tok | $0.80 / 1M tok | $2.50 / 1M tok | $0.30 / 1M tok | $3.00 / 1M tok (Together) |
| Output Price | $15.00 / 1M tok | $1.20 / 1M tok | $75.00 / 1M tok | $15.00 / 1M tok | $4.00 / 1M tok | $10.00 / 1M tok | $2.50 / 1M tok | $3.00 / 1M tok (Together) |
| Modalities | Text + Vision + Audio | Text + Vision | Text + Vision | Text + Vision | Text + Vision | Text + Vision + Audio + Video | Text + Vision + Audio + Video | Text only |
| Function Calling | ||||||||
| Structured Outputs | ||||||||
| Agentic Capabilities | Computer use, browser, code | Tool use only | Agent SDK, computer use, code | Agent SDK, computer use | Tool use | Tool use, code execution | Tool use | Tool use |
| Knowledge Cutoff | Oct 2025 | Oct 2025 | Jan 2026 | Jan 2026 | Jan 2026 | Dec 2025 | Dec 2025 | Jul 2024 |
| Prompt Caching | ||||||||
| Open Weights | ||||||||
| Best For | Reasoning + agents, multi-step planning | High-volume routing, classification, summary | Complex code, deep research, long-horizon agents | Production apps, RAG, agent steps | Real-time chat, batch jobs, classification | Long-doc analysis, video understanding | Real-time multimodal, transcripts, batch | Self-hosted, fine-tuning, data sovereignty |
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About the Author
David Shadrake
David Shadrake works on strategic business development and tech partnerships, with focus areas across AI, fintech, venture capital, growth, sales, SEO, blockchain, and broader tech innovation. Read more of his perspective on partnerships, market dynamics, and emerging technology at davidshadrake.com.