# Claude Sonnet 5.5 Usage, Cost & Rank | OpenCode Data

> Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens.

Fast Claude model for everyday coding, agents, and knowledge work

- Page: https://opencode.ai/data/anthropic/claude-sonnet-5-5
- JSON: https://opencode.ai/data/anthropic/claude-sonnet-5-5.json
- Model ID: anthropic/claude-sonnet-5-5
- Lab: Anthropic

## Model facts

| Fact | Value |
| --- | --- |
| Context window | 1M |
| Max output | 128K |
| Knowledge cutoff | 2026-06 |
| Release date | 2026-09-28 |
| Input modalities | text, image, pdf |
| Output modalities | text |
| Reasoning | Yes |
| Tool calling | Yes |
| Open weights | No |

## Pricing: USD per 1M tokens

| Input | Output | Cached input | Cache write |
| --- | --- | --- | --- |
| $2.00 | $10.00 | $0.20 | $2.50 |

## Benchmarks

| Benchmark | Score | Metric | Source |
| --- | --- | --- | --- |
| Terminal-Bench | 70.6 | score | https://www.anthropic.com/claude-sonnet-5-5 |
| FrontierCode | 46.2 | score | https://www.anthropic.com/claude-sonnet-5-5 |
| CursorBench | 55.5 | score | https://www.anthropic.com/claude-sonnet-5-5 |
| GDPval-AA | 1844 | Elo | https://www.anthropic.com/claude-sonnet-5-5 |
| Humanity's Last Exam | 64.5 | score | https://www.anthropic.com/claude-sonnet-5-5 |
| OSWorld | 80.1 | partial score | https://www.anthropic.com/claude-sonnet-5-5 |

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.