--- title: "Anthropic launches Claude Sonnet 5 as a cheaper way to run agents" url: https://daily.dev/posts/anthropic-launches-claude-sonnet-5-as-a-cheaper-way-to-run-agents-whfqrqksz source_url: https://techcrunch.com/2026/06/30/anthropic-launches-claude-sonnet-5-as-a-cheaper-way-to-run-agents type: article source: "TechCrunch" published: 2026-06-30T18:00:56.532Z updated: 2026-07-01T22:11:19.698Z tags: ["llm", "ai-agents", "claude", "anthropic", "prompt-injection"] reading_time: 4 upvotes: 7 comments: 5 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Anthropic launches Claude Sonnet 5 as a cheaper way to run agents **[TechCrunch](https://daily.dev/sources/tc)** · 4 min read · 7 upvotes · 5 comments ## Summary Anthropic has released Claude Sonnet 5, a mid-tier model with significantly improved agentic capabilities — including autonomous planning, tool use, and multi-step task completion. Priced at $2/$10 per million input/output tokens through August 31 (rising to $3/$10 after), it undercuts Opus 4.8, GPT-5.5, and Gemini 3.1 Pro while delivering performance close to Opus 4.8 on most benchmarks. On agentic coding, Sonnet 5 scores 63.2% vs. Opus 4.8's 69.2%, and it slightly outperforms Opus 4.8 on knowledge work tasks. Safety improvements include lower rates of hallucination, sycophancy, and susceptibility to prompt injection attacks. Sonnet 5 is now the default model for free and Pro Claude plans. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@doncho** · 0 upvotes > Interesting! > I'm wondering, though: why do they put a price on something that's already included in the plans? For Claude Enterprise, perhaps? **@hardik15** · 0 upvotes > How does it compare with Fable 5? Sonet 5 is minor upgrade to current Opus version **@elmarchavez** · 0 upvotes > So the cheaper options were announced. Wonder what other AI companies would do about this. Kinda excited where it leads now. --- Tags: [#llm](https://daily.dev/tags/llm), [#ai-agents](https://daily.dev/tags/ai-agents), [#claude](https://daily.dev/tags/claude), [#anthropic](https://daily.dev/tags/anthropic), [#prompt-injection](https://daily.dev/tags/prompt-injection) [View this post on daily.dev](https://daily.dev/posts/anthropic-launches-claude-sonnet-5-as-a-cheaper-way-to-run-agents-whfqrqksz)