Question 1

What is Claude Sonnet 5.5 (batch)?

Accepted Answer

Claude Sonnet 5.5 (batch) is a model from Anthropic, released on Sep 28, 2026. Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

Question 2

How much does Claude Sonnet 5.5 (batch) cost?

Accepted Answer

On the Respan gateway, input starts at $1.00 per 1M tokens on OpenRouter, and output starts at $5.00 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve Claude Sonnet 5.5 (batch) on Respan?

Accepted Answer

Claude Sonnet 5.5 (batch) is served by OpenRouter.

Question 4

What is Claude Sonnet 5.5 (batch)'s context window?

Accepted Answer

Claude Sonnet 5.5 (batch) accepts up to 1M tokens of context.

Question 5

How do I use Claude Sonnet 5.5 (batch) with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "claude-sonnet-5-5:batch". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

Where does Claude Sonnet 5.5 (batch) rank on the Respan Index?

Accepted Answer

Claude Sonnet 5.5 (batch) scores 68.5 out of 100 on the Respan Index v1.1, ranking #6 of 138 models. By category: Coding 70.1, Agents 78.1, Reasoning 70.7, Knowledge & language 48.4, and Human preference 59.5. The Respan Index combines independent and lab-reported benchmark results into one score, using benchmark data collected by llmmetric.com.

Question 7

How does Claude Sonnet 5.5 (batch) score on benchmarks?

Accepted Answer

Claude Sonnet 5.5 (batch) has 29 published benchmark scores, including LiveBench Coding 91.4%, OSWorld 2.1 (partial) 80.1%, and GPQA Diamond 95.6%. Each score links to where it was published; the data is collected by llmmetric.com.

Claude Sonnet 5.5 (batch)

Providers

Pricing

Cost by volume

Benchmarks

Certified where it counts.

Respan Indexv1.1

Coding6

Agents3

Reasoning6

Math4

Knowledge3

Multimodal2

Arena4

Other1

Apps