Claude Opus 4.1 Blog

Claude Opus 4.1 vs Grok 4 — Who’s Ahead Today?
Dec 4, 2025
Claude Opus 4.1
grok 4

Claude Opus 4.1 vs Grok 4 — Who’s Ahead Today?

In early August 2025 Anthropic shipped Claude Opus 4.1, a focused upgrade aimed at real-world coding, agentic workflows, and multi-step reasoning; at roughly
OpenAI’s GPT-5 vs Claude Opus 4.1: A coding comparison
Sep 24, 2025
Claude Opus 4.1
GPT-5

OpenAI’s GPT-5 vs Claude Opus 4.1: A coding comparison

Anthropic’s Claude Opus line (Opus 4 / Claude Opus 4.1) and OpenAI’s GPT-5 show state-of-the-art performance on modern coding benchmarks, but they trade
Is Claude Better Than ChatGPT for Coding in 2025?
Dec 4, 2025
ChatGPT
Claude
Claude Opus 4.1
GPT-5

Is Claude Better Than ChatGPT for Coding in 2025?

Anthropic's Claude series and OpenAI's ChatGPT powered by GPT models. Developers, researchers, and hobbyists alike are asking: Is Claude truly superior to ChatGPT for coding tasks?
How to access Claude Opus 4.1 via CometAPI — a practical, up-to-date guide
Aug 13, 2025
Claude Opus 4.1

How to access Claude Opus 4.1 via CometAPI — a practical, up-to-date guide

Anthropic’s Claude Opus 4.1 arrived as an incremental but meaningful upgrade to the Opus family, with notable gains in coding, agentic workflows, and
Claude Opus 4.1 vs Opus 4.0: A Comprehensive Comparison
Aug 11, 2025
Claude Opus 4
Claude Opus 4.1

Claude Opus 4.1 vs Opus 4.0: A Comprehensive Comparison

With the release of Claude Opus 4.1 on August 5, 2025, Anthropic delivers an incremental yet impactful upgrade over its predecessor, Claude Opus 4 (released May 22, 2025). This article examines the key distinctions between Opus 4.1 and Opus 4.0 across performance, architecture, safety, and real-world applicability
What is Claude Opus 4.1? All You Need to Know
Oct 12, 2025
Claude Opus 4.1

What is Claude Opus 4.1? All You Need to Know

Anthropic’s Claude Opus 4.1 marks a significant incremental step in large-language-model evolution, offering enhanced capabilities in coding, reasoning, and
Anthropic Unveils Claude Opus 4.1, Bolstering Coding and Reasoning Capabilities
Aug 6, 2025
Claude Opus 4.1

Anthropic Unveils Claude Opus 4.1, Bolstering Coding and Reasoning Capabilities

On August 5, 2025, Anthropic publicly released Claude Opus 4.1, a significant refinement of its flagship Opus 4 model family, aimed at advancing agentic
Claude Opus 4.1 API
Nov 26, 2025
Claude 4
Claude Opus 4
Claude Opus 4.1

Claude Opus 4.1 API

Anthropic’s Claude Opus 4.1 represents the latest iteration in its flagship Opus series, officially launched on August 5, 2025. This drop-in replacement for Opus 4 brings targeted enhancements in agentic tasks, real-world coding, and multi-step reasoning.