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Anthropic: Claude Sonnet 4.6

Active

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.

By:
Anthropic
Input:
Output:
Context length:
1M
Max output:
128K
Published:
2026-02-18
toolsreasoningstreamingvisioncaching

Providers

Same model, different providers. Automatic routing picks the cheapest healthy one within the same quality tier.

Provider
amazon-bedrock$3/1M tokens$15/1M tokens
Read$0.3/1M tokensWrite 5m$3.75/1M tokensWrite 1h$6/1M tokens
1M
30% offanthropic$3$2.1/1M tokens$15$10.5/1M tokens
Read$0.3$0.21/1M tokensWrite 5m$3.75$2.625/1M tokensWrite 1h$6$4.2/1M tokens
1M
90% offLowestamazon-kiro$3$0.3/1M tokens$15$1.5/1M tokens
Read$0.3$0.03/1M tokensWrite 5m$3.75$0.375/1M tokensWrite 1h$6$0.6/1M tokens
1M

Availability

24 hours

Success rate of the requests Amux actually sent to each provider. Client errors are excluded from the denominator — a malformed request isn't the provider's fault.

Throughput

24 hours

Average output speed on streaming requests, in tokens per second (TPS).

Latency

24 hours

Average time to first token (TTFT) on streaming requests — how long from sending a request to receiving its first token.

Activity

24 hours

Token usage and cost for this model over time, split by the provider that served each request.

Related models

More models from Anthropic

Anthropic: Claude Fable 5.11M contextfrom $7 / M tokens2 providersClaude 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 code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
Anthropic: Claude Opus 51M contextfrom $0.5 / M tokens3 providersClaude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents.
Anthropic: Claude Sonnet 51M contextfrom $0.3 / M tokens3 providersClaude Sonnet 5 is built to be the most agentic Sonnet model yet. It can plan, use tools such as browsers and terminals, and operate autonomously at a level that only recently required larger and more expensive models.