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Gemini Argon vs Claude Fable vs Leiolai 1 vs GPT-6 Astra vs Grok 4.7

Leiolai 1 has an 11-million-token context window, no response output limit in infinite generation, and Plus Ultra thinking on the Free plan.

Gemini Argon, Claude Fable, Leiolai 1, GPT-6 Astra, and Grok 4.7 represented by their monochrome marks, with a silicon glow around Leiolai.
Gemini Argon, Claude Fable, Leiolai 1, GPT-6 Astra, and Grok 4.7 represented by their monochrome marks, with a silicon glow around Leiolai.

Leiolai 1 runs inference across iPhones, iPads, MacBooks, Android devices, and PCs. Leiolai pays users for the computation they provide.

Which model has the largest context window?

Leiolai 1 has the largest context window of these models: 11 million tokens. GPT-6 Astra has 1.05 million, Gemini 4 Argon has 1,048,576, Claude Fable 5.1 has 1 million, and Grok 4.7 has 500,000.

Context window · tokens · linear scale
Leiolai 111M
GPT-6 Astra1.05M
Gemini 4 Argon1,048,576
Claude Fable 5.11M
Grok 4.7500K

A larger context window lets you include more documents, conversation history, or a larger codebase in one request. Argon’s figure is a shared budget for input, thinking, and output. OpenAI separately caps input at 922,000 tokens. Leiolai’s 11-million-token context and infinite generation are experimental features.

How long can a response be?

Response output limits
ModelOutput
Gemini 4 Argon65,536 by default; long decode uses the remaining shared context
Claude Fable 5.1128K tokens
Leiolai 1No response output limit in infinite generation
GPT-6 Astra128,000 tokens
Grok 4.7No text output limit

Grok 4.7 has no fixed text output cap. Its context window is 500,000 tokens. Argon’s long decode runs in the background and shares the same context as the prompt and reasoning. In infinite generation, Leiolai has no output limit. A response can continue for as long as the task requires.

Gemini Argon, Claude Fable, Leiolai 1, GPT-6 Astra, and Grok 4.7 API prices

USD per million tokens · uncached input · standard API rates
Model / thinking depthInputOutput
Gemini 4 ArgonIntroductory, through November 30$2$10
Claude Fable 5.1$10$50
Leiolai 1 · LowResearch$0.01$0.02
Leiolai 1 · MediumResearch$0.25$0.65
Leiolai 1 · HighResearch$6.40$21
Leiolai 1 · Plus UltraResearch$160$700
GPT-6 AstraUp to 272K input tokens$10$50
Grok 4.7Under 200K input tokens$2$6

Argon’s standard rate becomes $4 input and $20 output on December 1, 2026. Above 272K input tokens, GPT-6 Astra costs $20/$75. At 200K input tokens or more, Grok 4.7 costs $4/$12. Claude Fable 5.1 keeps its $10/$50 rate across the full 1-million-token context.

Leiolai’s price depends on thinking depth and chat mode. Private and Incognito have separate rates in the Leiolai API documentation. For more comparisons, check out the cheapest AI API rates in 2026 and the most expensive AI API rates in 2026.

Gemini 4 Argon: multimodal reasoning and long decode

Gemini 4 Argon accepts text, images, audio, video, and PDFs, and produces text. Google offers low, medium, and high thinking levels. Argon is available through the paid Gemini API and AI Studio.

Long decode lets Argon continue a response beyond the default 65,536-token synchronous output, using the background API. Input, reasoning, and generated text still share one 1,048,576-token window. See our Gemini 4 Argon vs Leiolai 1 comparison for the access and pricing details.

Claude Fable 5.1: long-running coding and research

Claude Fable 5.1 is Anthropic’s most capable widely released model, with a 1-million-token context and up to 128K output tokens. Fable supports extended reasoning, coding, multi-step research, and work on documents, spreadsheets, and presentations.

Claude Mythos 5.1 remains restricted to verified organizations. Fable 5.1 makes the same capabilities more broadly available. Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5 offer lower-priced choices in the Claude API.

Leiolai 1: free flagship access and distributed inference

The Leiolai Free plan includes Leiolai 1, our most capable model, and Plus Ultra, our highest thinking depth. Leveling up your chip system to Silicon unlocks our highest tier of intelligence at no added cost to you. The Leiolai app is free and no card is required.

Leiolai runs inference across consumer devices and pays users for the computation they provide. You can earn with Leiolai on your phone or PC, then use those earnings to ask questions without a monthly subscription. Paid plans increase usage limits and add earning bonuses.

A silver laptop, phone on a charging stand, and tablet on a graphite desk.

Developers can use Leiolai 1 through the Leiolai API. API usage is billed separately from the app’s Free plan and subscriptions.

GPT-6 Astra: coding, computer use, and research

GPT-6 Astra is OpenAI’s most capable model for demanding reasoning, coding, computer use, research, and document creation. Its API supports tools including web search, code execution, and computer use. Astra accepts text and images and produces text.

Astra has a 1,050,000-token context and a 128,000-token maximum output. Its short-prompt API price is $10 input and $50 output per million tokens. OpenAI also offers GPT-6.1 Sol at $2/$10 for complex coding, computer use, and professional work.

Read our GPT-6 Astra vs Fable 5.1 vs Leiolai 1 comparison for more on Astra and Fable.

Grok 4.7: web and X search

Grok 4.7 supports coding, reasoning, and tool-based work, with web search, X search, code execution, and function calling. Grok accepts text and images and produces text, with a 500,000-token context and no text output limit.

Grok 4.7’s standard global API costs $2 input and $6 output per million tokens for prompts below 200K. Larger prompts cost $4/$12.

Which should you use?

For a large document collection or an extended conversation, Leiolai 1 offers the most context here. The Free plan also gives you our flagship model and highest thinking depth, with a way to earn through the app.

For multimodal input and background long decode, look at Gemini 4 Argon. For long-running work in Claude, look at Fable 5.1. For work built around OpenAI’s coding and computer-use tools, look at GPT-6 Astra. For research that needs X search alongside the web, look at Grok 4.7.

You can start with Leiolai Free today. No card required.

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