Anthropic API Pricing

Claude Haiku 4 is Anthropic's fastest and most affordable model. Designed for high-throughput tasks where cost and latency matter more than maximum capability.

Claude 3 Haiku is the previous-generation small model from Anthropic — cheap, fast, and reliable for simple tasks. Largely replaced by Claude Haiku 4 at the same price point.

Claude 3.5 Haiku is a step up from Claude 3 Haiku in quality while staying firmly in the budget tier. It punches above its price class on coding and instruction-following tasks.

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.

Claude Sonnet 5 is Anthropic's most agentic Sonnet model yet (released June 30, 2026) — it plans, uses tools like browsers and terminals, and runs multi-step tasks autonomously, even checking its own output. It matches Opus 4.8 on knowledge work and lands just behind it on agentic coding, at a fraction of the cost. Launch pricing is $2/$10 per million tokens through Aug 31, 2026, then the standard $3/$15.

Claude Sonnet 4 is the sweet spot in Anthropic's lineup — fast, affordable, and capable enough for the vast majority of production workloads. It delivers near-Opus quality at a fraction of the cost.

Claude 3.5 Sonnet was the workhorse of the Claude 3 family — widely adopted for coding, writing, and chat. Still a strong baseline, though Claude Sonnet 4 supersedes it for most new projects.

Claude 3.7 Sonnet is Anthropic's first hybrid reasoning model — it can think step-by-step for hard problems or respond instantly for simple ones, all at Sonnet-level pricing. The 128K output limit makes it uniquely capable for long-form generation.

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work.

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.

Claude Opus 5 is Anthropic's flagship model, released July 24, 2026. It reaches close to Claude Fable 5's frontier intelligence at half the price, and holds the same $5/$25 per-million pricing as Opus 4.8 while more than doubling its agentic coding score. It tops Frontier-Bench v0.1 (43.3%), ARC-AGI-3 (30.2%, roughly 4x the next best model), and Artificial Analysis' GDPval-AA v2 knowledge-work leaderboard (1,861 Elo). It is also Anthropic's most aligned Opus model to date.

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family.

Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents.

Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks.

Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use.

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual.

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding.

Claude Opus 4 is Anthropic's most powerful model — built for complex reasoning, long-form analysis, and tasks that require deep context understanding. It excels at nuanced writing, research synthesis, and multi-step problem solving.

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks.