What is the difference between this page and the model comparison page?

This page is a directory: one entry per model with its price, context window and links. The model comparison page puts two models side by side with benchmarks and a recommendation for each use case.

Where do the prices and specs come from?

From each vendor's official documentation. Every value on a model page is tied to a source URL and a last-verified date, and benchmark and speed figures come from Artificial Analysis or the vendor's own announcement, labeled as such.

Why do some models have a full page and others only comparison links?

Full model pages are added one at a time. Until a model has its own page, the directory links to every comparison that covers it.

AI Models

Pricing, context windows and comparisons for the frontier models from Anthropic and OpenAI.

Last updated 2026-10-01 · Vendor data sourced from Anthropic and OpenAI

Anthropic Models

Claude Fable 5.1

For demanding reasoning and long-horizon agentic work

Input / output: $10 / $50 per MTok
Context: 1M tokens
Released: Sep 1, 2026

Compared in

Claude Opus 5.5 vs Claude Fable 5.1

Claude Opus 5.5

For long-running agentic coding and knowledge work

Input / output: $4 / $20 per MTok
Context: 1M tokens
Released: Sep 22, 2026

Pricing, benchmarks & cost calculator →

Compared in

Claude Sonnet 5.5

The best combination of speed and intelligence

Input / output: $2 / $10 per MTok
Context: 1M tokens
Released: Sep 28, 2026

Compared in

Claude Sonnet 5

Anthropic's balanced reasoning model (succeeded by Sonnet 5.5)

Input / output: $2 / $10 per MTok
Context: 1M tokens
Released: Jun 30, 2026

Compared in

OpenAI Models

GPT-6 Astra

OpenAI's most capable model for complex reasoning and end-to-end work

Input / output: $10 / $50 per MTok
Context: 1.05M tokens
Released: Sep 3, 2026

Compared in

Claude Opus 5.5 vs GPT-6 Astra

GPT-6 Luna

OpenAI's lightweight reasoning model — 20x cheaper than GPT-6 Sol

Input / output: $0.10 / $0.50 per MTok
Context: 1.05M tokens
Released: Sep 22, 2026

Compared in

GPT-6 Luna vs GPT-6 Sol

GPT-6 Sol

OpenAI's efficient reasoning model (superseded by GPT-6.1 Sol)

Input / output: $2 / $10 per MTok
Context: 1.05M tokens
Released: Sep 22, 2026

Compared in

GPT-6.1 Sol

OpenAI's latest efficient reasoning model, successor to GPT-6 Sol

Input / output: $2 / $10 per MTok
Context: 1.05M tokens
Released: Sep 29, 2026

Compared in

GPT-6 Sol vs GPT-6.1 Sol

Compare Two Models Side by Side

Want a verdict instead of a list? The AI model comparison hub has head-to-head pages with benchmarks, per-task cost and a recommendation for each use case.

AI Models FAQ

What is the difference between this page and the model comparison page?
This page is a directory: one entry per model with its price, context window and links. The model comparison page puts two models side by side with benchmarks and a recommendation for each use case.
Where do the prices and specs come from?
From each vendor's official documentation. Every value on a model page is tied to a source URL and a last-verified date, and benchmark and speed figures come from Artificial Analysis or the vendor's own announcement, labeled as such.
Why do some models have a full page and others only comparison links?
Full model pages are added one at a time. Until a model has its own page, the directory links to every comparison that covers it.