Anthropic 發布 Claude Sonnet 5.5：Terminal-Bench 4.0 得分 70.6%，維持 $2/$10 定價
Anthropic just released Claude Sonnet 5.5.It is the second model in the Claude 5.5 family, following Claude Opus 5.5.Anthropic positions it as a faster, lower-cost complement to Opus 5.5.It targets well-scoped everyday tasks, bug fixing, and polished documents, slides, and spreadsheets.
Is it deployable?Yes, It is live on the Claude Platform as claude-sonnet-5-5, plus AWS, Google Cloud, and Microsoft Azure.It is a closed-weights model, so self-hosting is not an option.
What Changed Versus Sonnet 5 Anthropic reports 4 main upgrades over Sonnet 5: Speed: output generation is 30%+ faster, making it the fastest Sonnet to date.Cost per task: up to 30% lower, because it needs fewer tokens and tool calls.
Writing: clearer prose, with early testers calling it a better collaboration partner.Vision and long-horizon work: it is the first Sonnet to beat Pokémon Red using only screenshots.Specs from the models overview: 1M-token context, 128K max output, and a June 2026 reliable knowledge cutoff.
Adaptive thinking is on by default.Effort runs across 5 levels: low, medium, high, xhigh, and max.Benchmarks All scores below are vendor-reported in the launch post.Methodology lives in the Sonnet 5.5 System Card.Terminal-Bench 4.0: 70.6%, versus 10.3% for Sonnet 5 and 66.4% for Opus 5.5 at Xhigh.
CursorBench 4.0: 55.5%, about 2 points below Opus 5.5 (57.8%).FrontierCode 1.1: 52.1% at Xhigh and 46.2% at Max.GPT-6 Sol scored 49.3%.GDPval-AA v2.1: 1844, versus 1846 for Opus 5.5 and 1449 for Sonnet 5.OSWorld 2.1: 80.1% on computer use, close to Opus 5.5 (81.8%).Humanity’s Last Exam: 64.
5% with tools, up from 54.9%.The Max result is lower than Xhigh for a reason.At Max, the model more often ran multi-agent code review.That sometimes caused timeouts or out-of-scope edits, which FrontierCode penalizes.Anthropic also states that Opus 5.
5 remains clearly stronger on complex, open-ended work.Pricing and Efficiency List pricing is unchanged from Sonnet 5: $2 per million input tokens and $10 per million output tokens.Cache reads cost $0.20 and cache writes $2.50 per million.That is half of Opus 5.5 ($4/$20).
Savings come from token efficiency, not a price cut.Customer data supports this.Balyasny Asset Management measured about 121K tokens per answer versus 497K on Sonnet 5.Base44 reported 3.6 iterations per app build, where Opus 5 took 7.7.Zendesk processed tickets 20% faster.
Effort defaults differ by surface.Claude Code and the Claude apps default to Medium.The Claude Platform defaults to High.How It Compares FeatureClaude Sonnet 5.5GPT-6 SolGemini 3.1 Pro PreviewClaude Opus 5.
5DeveloperAnthropicOpenAIGoogleAnthropicPrice per 1M tokens (input/output)$2 / $10$2 / $10 (prompts up to 272K)$2 / $12 (prompts up to 200K)$4 / $20Context window1M tokens1,050,000 tokens1,048,576 tokens1M tokensMax output128K tokens128K tokens65,536 tokens128K tokensKnowledge cutoffJune 2026April 20, 2026Not listedJune 2026Reasoning controlAdaptive thinking, 5 effort levels6 effort levels (none to max)Thinking supportedAdaptive thinking (always on)InputsText, imageText, imageText, image, video, audio, PDFText, imageFrontierCode 1.
152.1% (Xhigh)49.3%Not reported54.4%GDPval-AA v2.118441487Not reported1846Chartography (no tools)61.6%53.6%Not reported64.
4%Release stageGenerally availableGenerally availablePreviewGenerally availableOpen weightsNoNoNoNo Benchmark scores are vendor-reported by Anthropic; GDPval-AA runs by Artificial Analysis.Prices are standard API list rates, verified September 28, 2026.
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important;font-size:12px!important} #mtp-s55 pre{padding:10px;margin:6px 0;white-space:pre-wrap;word-break:break-word} #mtp-s55 .bad{color:#E07A6B!important} #mtp-s55 .ok{color:#9DB57A!important} #mtp-s55 .ft{margin-top:18px;padding-top:10px;border-top:1px solid #2b2a27!
important;font-size:12px;color:#8f8d86;display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px} #mtp-s55 .ft b{color:#D97757} #mtp-s55 hr,#mtp-s55 p:empty,#mtp-s55 del,#mtp-s55 s{display:none!important} @media (max-width:640px){#mtp-s55{padding:14px}#mtp-s55 .
row{grid-template-columns:84px 1fr 54px;font-size:12px}#mtp-s55 .grid2{grid-template-columns:1fr}#mtp-s55 .lv{font-size:11px;padding:8px 2px}} Claude Sonnet 5.5, explained interactivelyTap through benchmarks, effort levels, task cost and the API migration checker.
BenchmarksEffort dialCost per taskMigration checkerSelect an effort level.Sonnet 5.5 exposes 5.Reasoning depthSpeed and token savingsMeters are illustrative of the direction Anthropic descri
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