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Compare context window, max output, and API price for GPT, Claude, Gemini, and Grok side by side.
| Model | Provider | Context Window | Max Output | Price (Input / Output per 1M tokens) |
|---|---|---|---|---|
| GPT-5.6 Sol | OpenAI | 1.05M tokens | 128K tokens | $5.00 / $30.00 |
| GPT-5.6 Terra | OpenAI | 1.05M tokens | 128K tokens | $2.50 / $15.00 |
| GPT-5.6 Luna | OpenAI | 1.05M tokens | 128K tokens | $1.00 / $6.00 |
| GPT-5.5 | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| GPT-5.5 Pro | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| GPT-5.4 | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| GPT-5.4 Pro | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| GPT-5.4 mini | OpenAI | 1M tokens | 16,384 tokens | See openai.com/pricing |
| GPT-5.4 nano | OpenAI | 1M tokens | 16,384 tokens | See openai.com/pricing |
| GPT-5 mini | OpenAI | 1M tokens | 16,384 tokens | See openai.com/pricing |
| GPT-5 nano | OpenAI | 1M tokens | 16,384 tokens | See openai.com/pricing |
| GPT-5 | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| GPT-4.1 | OpenAI | 1M tokens | 32,768 tokens | See openai.com/pricing |
| Claude Opus 4.8 | Anthropic | 1M tokens | 32,000 tokens | $5.00 / $25.00 |
| Claude Sonnet 4.6 | Anthropic | 1M tokens | 8,192 tokens | $3.00 / $15.00 |
| Claude Haiku 4.5 | Anthropic | 200K tokens | 8,192 tokens | $0.80 / $4.00 |
| Gemini 3.1 Pro | 1M tokens | 64,000 tokens | $2.00 / $12.00 | |
| Gemini 3 Flash | 1M tokens | 65,535 tokens | $0.50 / $3.00 | |
| Gemini 3.1 Flash-Lite | 1M tokens | 65,536 tokens | $0.25 / $1.50 | |
| Grok 4.5 | xAI | 500K tokens (API) | Bounded by context | $2.00 / $6.00 |
| Grok 4.3 | xAI | 1M tokens | Bounded by context | $1.25 / $2.50 |
| Grok 4.20 | xAI | 2M tokens (API); 128K Grok web UI | Bounded by context | $1.25 / $2.50 |
| Grok Build 0.1 | xAI | 256K tokens | Bounded by context | $1.00 / $2.00 |
Budgeting a workload? Use the AI Cost Calculator to compare cost on your real token counts.
Figures as of March 2026 from official provider pricing pages; xAI Grok rates verified July 2026 from docs.x.ai. OpenAI list prices for GPT-5.5/5.4/5/4.1 are not published on this page, check openai.com/pricing. Always confirm current rates at openai.com/pricing, docs.anthropic.com/pricing, ai.google.dev/pricing, and docs.x.ai/pricing.
Among current models, xAI's Grok 4.20 supports the largest window at 2 million tokens via the API (its web UI caps near 128K on the free tier). GPT-5.6 (Sol, Terra, Luna) supports 1.05 million tokens, and GPT-5.5, GPT-5.4, Claude Opus 4.8, Gemini 3.1 Pro, and Grok 4.3 all support 1 million tokens.
Among models with published API pricing, Gemini 3.1 Flash-Lite is the lowest at $0.25 input and $1.50 output per 1M tokens, followed by Claude Haiku 4.5 at $0.80 / $4.00. The cheapest choice for your workload depends on your input-to-output ratio, use the AI Cost Calculator to compare on your real token counts.
The context window is the total tokens a model can consider at once, your prompt plus its reply plus any history. Max output is the cap on a single response. A model can have a 1M-token context but only return up to, say, 32K tokens in one answer.
The base figures are from official provider pricing pages as of March 2026, and xAI Grok rates were verified in July 2026 from docs.x.ai. Some OpenAI list prices are not published on this page, always confirm current rates on each provider's official pricing page before budgeting.
Yes. AI Toolbox (formerly ChatGPT Toolbox) adds folders, search, export, and a shared prompt library on top of ChatGPT, Claude, Gemini, and Grok, whichever models you use. It is a browser extension, not an AI subscription, so you keep using your own accounts.
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AI Toolbox is a browser extension that adds folders, search, and export inside each AI. This unlocks all four modules, it is not an AI subscription. You keep using your own ChatGPT, Gemini, Claude, and Grok accounts.
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