Claude Sonnet 5 Launches at $2 Per Million Tokens, Narrowing Gap With Opus 4.8
Updated
Updated · Anthropic · Jun 30
Claude Sonnet 5 Launches at $2 Per Million Tokens, Narrowing Gap With Opus 4.8
3 articles · Updated · Anthropic · Jun 30
Summary
Anthropic made Claude Sonnet 5 the default model for Free and Pro plans and opened it across Max, Team, Enterprise, Claude Code and its API.
Sonnet 5 is pitched as a more agentic upgrade over Sonnet 4.6, with stronger reasoning, coding and tool use that approaches Opus 4.8 at lower cost.
Pricing starts at $2 per million input tokens and $10 per million output tokens through Aug. 31, 2026, then rises to $3 and $15; Opus 4.8 costs $5 and $25.
Safety tests showed lower rates of hallucination, sycophancy and other undesirable behavior than Sonnet 4.6, though Sonnet 5 still trailed Opus 4.8 and Mythos Preview on some misalignment measures.
Cyber evaluations found Sonnet 5 could not produce a working Firefox exploit and remains far weaker than Opus models on dangerous cyber tasks, leading Anthropic to enable cyber safeguards by default.
If mid-size AI now rivals flagships, are giant, expensive models becoming obsolete?
As powerful AI gets cheaper, is the real challenge now managing AI agents, not building them?
With AI agents now a baseline, are models getting safer or just better at passing tests?
Claude Sonnet 5 Launch: Frontier Agentic AI, 6x Market Surge, and the New Era of Enterprise Automation (June 2026)
Overview
On June 30, 2026, Anthropic launched Claude Sonnet 5, a powerful AI model designed for advanced performance in coding, agentic workflows, and professional tasks. Sonnet 5 stands out by supporting both text and image input, offering robust multilingual and vision features, and delivering high-quality text generation. Built to operate effectively at scale, it meets the rising demand for high-performance AI in enterprise and development settings. With its comprehensive capabilities and seamless integration across major platforms, Claude Sonnet 5 is positioned as a versatile solution for complex, global business needs.