# New Model Available: Claude Sonnet 5.5

> Source: <https://zenmux.ai/anthropic/claude-sonnet-5.5>
> Published: 2026-09-29 02:29:50+00:00

Claude Sonnet 5.5 is Anthropic’s upgraded Sonnet-class model, delivering stronger performance than Claude Sonnet 5 while running over 30% faster and at lower cost for many workloads. It is designed for agentic coding, tool use, and everyday professional tasks, making it well suited for developers and teams building fast, capable AI agents.

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## Providers

Route requests across multiple providers. Copy a provider slug to set your preference.

**$2**

*/ M tokens*

**$10**

*/ M tokens*

*Read:*

**0.2**/ M tokens

*Write:*

**2.5-4**/ M tokens1M2.49s73.8tps

**$2**

*/ M tokens*

**$10**

*/ M tokens*

*Read:*

**0.2**/ M tokens

*Write:*

**2.5-4**/ M tokens1M1.95s99.8tps

## Uptime

24hours
Direct request success rate on AI Gateway and per-provider.

## Throughput

24hours
P50 throughput on live AI Gateway traffic, in tokens per second (TPS).

## Latency

24hours
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds.

## Activity

Token volume and request traffic to this model over time.

## Benchmarks

Scores on standardized evaluations. Higher percentages are better — and rank percentile shows

Metrics sourced from[Artificial Analysis](https://artificialanalysis.ai/)

## Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for. [View All](https://zenmux.ai/analytics/apps)

## Related Models

More models from [Anthropic](https://zenmux.ai/anthropic)