Anthropic

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for long-running, complex, and asynchronous tasks that previously required frequent human check-ins. It is particularly strong at end-to-end work that would otherwise take a person hours, days, or weeks — taking on problems that are long-running, ambiguous, or highly multi-step. It executes well-scoped tasks with few mistakes, automatically self-correcting through verification loops, and ships with robust safeguards.

Anthropic's most capable generally available Opus model for complex reasoning, long-horizon agentic coding, and high-autonomy professional work. Same API pricing as Opus 4.7 ($5 / MTok input, $25 / MTok output). Supports up to 300k output tokens via Message Batches API with the output-300k-2026-03-24 beta header.

Most capable generally available model for complex reasoning and agentic coding. Features a new tokenizer (compared to previous models) that may use up to 35% more tokens for the same fixed text. Includes a step-change improvement in agentic coding over Opus 4.6. Supports up to 300k output tokens via Message Batches API with the output-300k-2026-03-24 beta header.

Flagship Claude model on Amazon Bedrock (global inference profile). Strongest tier for coding, agents, and long-running professional workflows with adaptive thinking, vision, tools, and up to 1M context.

Opus-class Claude model on Amazon Bedrock with adaptive thinking, vision, document understanding, tool use, and 1M context. Suited to complex reasoning and high-stakes agentic tasks.

Claude Opus 4.1 generation model. Note higher pricing ($15/$75 per MTok) compared to later Opus 4.x models.

Recommended Sonnet-class production model on Amazon Bedrock. Best balance of speed, intelligence, extended/adaptive thinking, vision, tools, and 1M context for coding and agentic workloads.

Sonnet 4.5 generation on Amazon Bedrock. Strong general-purpose model with extended/adaptive thinking, vision, document inputs, tool calling, and 1M context.

Fastest current Claude tier on Amazon Bedrock. Near-frontier intelligence for high-volume chat, vision, document parsing, tools, and extended thinking at low cost.