# Anthropic Releases Claude Sonnet 5.5: 70.6% on Terminal-Bench 4.0 at the Same $2/$10 Price

> **Publication**: aitalky (Independent AI Journalism)
> **Canonical Citation URL**: https://aitalky.vercel.app/news/anthropic-releases-claude-sonnet-5-5-70-6-on-terminal-bench-4-0-at-the-same-2-10
> **Original Source**: [MarkTechPost](https://www.marktechpost.com/2026/09/28/anthropic-releases-claude-sonnet-5-5-70-6-on-terminal-bench-4-0-at-the-same-2-10-price/)
> **Author**: Michal Sutter (undefined)
> **Published Date**: Tuesday, September 29, 2026
> **Category**: PRODUCTS
> **Tags**: News, MarkTechPost, AI

## Executive Summary
Anthropic has released Claude Sonnet 5.5, the second model in its Claude 5.5 family. It scores 70.6% on Terminal-Bench 4.0 and lands within 2 points of Opus 5.5 on GDPval-AA. It also generates output 30%+ faster than Sonnet 5 and keeps the same $2/$10 per mill



## Full Coverage
Anthropic has released Claude Sonnet 5.5, the second model in its Claude 5.5 family. It scores 70.6% on Terminal-Bench 4.0 and lands within 2 points of Opus 5.5 on GDPval-AA. It also generates output 30%+ faster than Sonnet 5 and keeps the same $2/$10 per mill

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