https://derekwang2002.github.io/ai-intelligence/en/projects/claude-sonnet-5-5/ Material changes in AI models, agents, engineering and infrastructure, with primary sources and recommendations. en Mon, 02 Nov 2026 16:56:00 GMT https://derekwang2002.github.io/ai-intelligence/en/events/ev-20260928-02/ ev-20260928-02-independent-cost-review Sun, 04 Oct 2026 16:02:19 GMT Update TRIAL <p>Independent evaluation finds Sonnet 5.5 maximum effort can cost more</p><p>Original story: Anthropic releases Claude Sonnet 5.5 with faster, cheaper agent work</p><p>Recommendation: TRIAL</p><p>Sources: <a href="https://artificialanalysis.ai/articles/claude-sonnet-5-5/">Artificial Analysis: Claude Sonnet 5.5</a></p> https://derekwang2002.github.io/ai-intelligence/en/events/ev-20260928-02/ ev-20260928-02-published Tue, 29 Sep 2026 16:01:24 GMT New TRIAL <p>Claude Sonnet 5.5 is broadly available at $2 per million input tokens and $10 per million output tokens. Anthropic reports faster, lower-cost agent work, but Artificial Analysis found that maximum effort used about 193k output tokens per task and cost roughly $7.60, around 50% more than Sonnet 5 in its suite. Cost savings therefore depend on effort and workload.</p><p><strong>Why read: </strong>Unchanged token pricing may still reset workhorse-model economics; validate effort and thinking migration.</p><p>Recommendation: TRIAL</p><p>Sources: <a href="https://www.anthropic.com/claude-sonnet-5-5">Anthropic Claude Sonnet 5.5 announcement</a> · <a href="https://github.com/anthropics/claude-code/releases/tag/v2.1.284">Anthropic Claude Code 2.1.284 release</a> · <a href="https://github.blog/changelog/2026-09-28-claude-sonnet-5-5-in-github-copilot/">Claude Sonnet 5.5 in GitHub Copilot</a></p>