Anthropic releases Claude Sonnet 5.5, nearing Opus performance at lower cost · 10 sources tracked
ByPulseAugur Editorial·[31 sources]·
Anthropic has released Claude Sonnet 5.5, a new iteration of its mid-tier language model. This update offers significant performance improvements, running up to 30% faster and costing up to 30% less for many tasks compared to its predecessor, Sonnet 5. While maintaining the same price point as Sonnet 5, Sonnet 5.5 demonstrates enhanced capabilities across various benchmarks, particularly in coding and agentic tasks, often approaching the performance of the higher-end Opus 5.5 model. The new model is now available on the Claude Platform and through major cloud providers, and it is also powering the free tier of claude.ai.
AI
IMPACT
Sets a new benchmark for mid-tier models, potentially driving down costs for AI-powered applications and increasing competition in the LLM space.
RANK_REASON
Frontier-lab model release with system card.
<p><strong><a href="https://www.anthropic.com/claude-sonnet-5-5">Claude Sonnet 5.5</a></strong></p> New Sonnet model from Anthropic today. They say it "runs 30%+ faster, and costs up to 30% less for most work" - it's priced the same as Sonnet 5 but appears to beat it on every ben…
<div class="medium-feed-item"><p class="medium-feed-snippet">Anthropic’s release of Claude Sonnet 5.5 represents a major shift in agentic coding and developer productivity. Rather than a pure price…</p><p class="medium-feed-link"><a href="https://medium.com/@umarhas…
Medium — Claude tag
TIER_1English(EN)·Programming with me·
<div class="medium-feed-item"><p class="medium-feed-snippet">Anthropic released Claude Sonnet 5.5 on September 28, 2026, less than a week after Claude Opus 5.5. The pitch is simple: a mid-tier model…</p><p class="medium-feed-link"><a href="https://medium.com/@ascendrixtech…
dev.to — Anthropic tag
TIER_1English(EN)·techaiwire·
<p>Anthropic released Claude Sonnet 5.5 on September 28, 2026, a faster model that comes close to its flagship Opus 5.5 at half the price. It costs $2 per million input tokens and $10 per million output tokens, the same as Sonnet 5. On one agentic coding test, Terminal-Bench 4.0,…
Medium — Claude tag
TIER_1Nederlands(NL)·ruhulikram·
<p>Anthropic shipped Claude Sonnet 5.5 on September 28, six days after Opus 5.5. It's the top story on Hacker News right now — 775 points, 500+ comments — and for once the hype is mostly earned. But buried under the benchmark charts is a detail that should bother you more than th…
Medium — Anthropic tag
TIER_1English(EN)·AI Engineering·
Email — Every
TIER_1English(EN)·010001a0e9a201fd-33b2dc38-c262-4129-b555-de77ea844b70-000000@send.every.to (010001a0e9a201fd-33b2dc38-c262-4129-b555-de77ea844b70-000000@send.every.to)·
<!-- Set the language of your main document. This helps screenreaders use the proper language profile, pronunciation, and accent. --> <!-- The title is useful for screenreaders reading a document. Use your sender name or subject line. --> Vibe Check: Sonnet 5.5 Finds Its Place in…
Medium — Anthropic tag
TIER_1English(EN)·Kyle Tse·
The gap between Qwen3.8 2.4T A95B and Claude Sonnet 5.5 is now 16.1 points, yet the open model is 2x cheaper per 1M output tokens — raising the question of whether this premium is worth paying. https:// olud.ai/leaderboard.html # OpenSource # AI # LLM
<!-- SC_OFF --><div class="md"><p>I know most people here probably don't care as much about sonnet 5.5 as they did opus 5.5, because their $100 and $200 plans already give them plenty of weekly usage for opus. But keep in mind: free users only get to use sonnet. And until now, So…
<table> <tr><td> <a href="https://www.reddit.com/r/Anthropic/comments/1wsly2p/introducing_claude_sonnet_55_the_second_model_in/"> <img alt="Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family" src="https://external-preview.redd.it/OWN5eDh5NHJzYXNoMYQZ-hp34wCe…
<!-- SC_OFF --><div class="md"><p>I maintain <a href="https://github.com/petmal/MindTrial"><strong>MindTrial</strong></a> and tested <strong>Sonnet 5.5</strong> and <strong>Opus 5.5</strong> on the same 98-task suite as their predecessors: 39 text tasks and 59 visual tasks, with …
<table> <tr><td> <a href="https://www.reddit.com/r/ClaudeAI/comments/1wslxzs/introducing_claude_sonnet_55_the_second_model_in/"> <img alt="Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family" src="https://external-preview.redd.it/aXA5bXQxcmtzYXNoMYQZ-hp34wCe0…
