---
title: Anthropic: Claude Fable Latest vs OpenAI: GPT-4.1 Nano
canonical: https://prompeteer.ai/compare/anthropic-claude-fable-latest-vs-openai-gpt-4-1-nano
updated: 2026-07-27
source: OpenRouter /models
---

# Anthropic: Claude Fable Latest vs OpenAI: GPT-4.1 Nano

Anthropic: Claude Fable Latest vs OpenAI: GPT-4.1 Nano: OpenAI: GPT-4.1 Nano has the larger context window (1,047,576 tokens); OpenAI: GPT-4.1 Nano is cheaper on input ($0.10 per 1M tokens); both support 3 input modalities. Data via OpenRouter /models, as of 2026-07-27.

| Metric | Anthropic: Claude Fable Latest | OpenAI: GPT-4.1 Nano |
| --- | --- | --- |
| Context (tokens) | 1,000,000 | 1,047,576 |
| Input $/M | $10.00 | $0.10 |
| Output $/M | $50.00 | $0.40 |
| Input modalities | text, image, file | image, text, file |
| Output modalities | text | text |
| Model id | ~anthropic/claude-fable-latest | openai/gpt-4.1-nano |

Source: Data via OpenRouter /models — as of 2026-07-27.