How much does Claude Sonnet 5.5 (batch) cost?

On the Respan gateway, Claude Sonnet 5.5 (batch) costs $1.00 per 1M input tokens and $5.00 per 1M output tokens on OpenRouter, after gateway discounts.

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

Claude Sonnet 5.5 (batch) is served by OpenRouter.

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

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

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

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.

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

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.

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

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.

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Agent setup

Paste into Claude Code, Cursor, or Codex

Copy for agentRead docs

Providers

Claude Sonnet 5.5 (batch) API: Pricing, Benchmarks & Context Window | Respan

Claude Sonnet 5.5 (batch)

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.

Input / output price: $1.00 / $5.00 per 1M
Context: 1M tokens
Released: Sep 28, 2026

Try Respan for free

Agent setup

Paste into Claude Code, Cursor, or Codex

Help me set up the Respan gateway: fetch and follow https://www.respan.ai/docs/agent-setup.md. Use model "claude-sonnet-5-5:batch".

from openai import OpenAI

client = OpenAI(

    base_url="https://api.respan.ai/api/",

    api_key="YOUR_RESPAN_API_KEY",

)

response = client.chat.completions.create(

    model="claude-sonnet-5-5:batch",

    messages=[{"role": "user", "content": "Hello!"}],

)

print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({

  baseURL: "https://api.respan.ai/api/",

  apiKey: "YOUR_RESPAN_API_KEY",

});

const response = await client.chat.completions.create({

  model: "claude-sonnet-5-5:batch",

  messages: [{ role: "user", content: "Hello!" }],

});

console.log(response.choices[0].message.content);

curl https://api.respan.ai/api/chat/completions \

  -H "Authorization: Bearer YOUR_RESPAN_API_KEY" \

  -H "Content-Type: application/json" \

  -d '{

    "model": "claude-sonnet-5-5:batch",

    "messages": [{"role": "user", "content": "Hello!"}]

}'

Read docs

Providers

One provider serves this model, priced per 1M tokens after gateway discounts.

Provider	Context	Input	Output	Cache read	Capabilities
OpenRouter`openrouter/anthropic/claude-sonnet-5.5:batch`	1M	$1.00/M	$5.00/M	$0.05/M

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Pricing

USD per 1M tokens on OpenRouter, after gateway discounts.

Input: $1.00 per 1M
Output: $5.00 per 1M
Cache read: $0.05 per 1M
Cache write: $1.25 per 1M

Cost by volume

Total cost from 0 to 1T tokens.

$1.00/MOpenRouter

Benchmarks

The Respan Index plus 29 published scores from 8 sources, each linked to where it was published.

68.5/ 100

Respan Index#6 of 138

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Published scores

Benchmark	Score	Source	Published
LiveBench CodingLiveBench	91.4%	LiveBench	Oct 5, 2026
Terminal-Bench 4.0Anthropic	70.6%	Anthropic	Sep 28, 2026
Terminal-Bench 4.0Vals AI	64.1%	Vals AI	Oct 5, 2026
FrontierSWE V2Proximal Labs	61.9%	Proximal Labs	Oct 5, 2026
CursorBench 4.0Anthropic	55.5%	Anthropic	Sep 28, 2026
FrontierCode v1.1 (Main)Anthropic	46.2%	Anthropic	Sep 28, 2026

Benchmark	Score	Source	Published
OSWorld 2.1 (partial)Anthropic	80.1%	Anthropic	Sep 28, 2026
APEX-AgentsMercor	75.5%	Mercor	Oct 5, 2026
LiveBench Agentic CodingLiveBench	56.3%	LiveBench	Oct 5, 2026

Benchmark	Score	Source	Published
GPQA DiamondEpoch AI	95.6%	Epoch AI	Oct 5, 2026
LiveBench ReasoningLiveBench	91.6%	LiveBench	Oct 5, 2026
LiveBench Data AnalysisLiveBench	78.6%	LiveBench	Oct 5, 2026
SimpleBenchSimpleBench	75.9%	SimpleBench	Oct 1, 2026
Mystery Game PuzzlesEpoch AI	65%	Epoch AI	Oct 5, 2026
Humanity's Last Exam (with tools)Anthropic	64.5%	Anthropic	Sep 28, 2026

Benchmark	Score	Source	Published
OTIS Mock AIME 2024-2025Epoch AI	100%	Epoch AI	Oct 5, 2026
LiveBench MathematicsLiveBench	96.7%	LiveBench	Oct 5, 2026
FrontierMath Tiers 1-3 v2Epoch AI	88.8%	Epoch AI	Oct 5, 2026
FrontierMath Tier 4 v2Epoch AI	80.5%	Epoch AI	Oct 5, 2026

Benchmark	Score	Source	Published
LiveBench LanguageLiveBench	83.4%	LiveBench	Oct 5, 2026
LiveBench Instruction FollowingLiveBench	70.5%	LiveBench	Oct 5, 2026
SimpleQA VerifiedEpoch AI	46.5%	Epoch AI	Oct 5, 2026

Benchmark	Score	Source	Published
Furniture AssemblyEpoch AI	75%	Epoch AI	Oct 5, 2026
Chartography (no tools)Anthropic	61.6%	Anthropic	Sep 28, 2026

Benchmark	Score	Source	Published
LMArena WebDevLMArena	1786 Elo · #3 of 94	LMArena	Oct 1, 2026
LMArena EloLMArena	1471 Elo · #33 of 141	LMArena	Oct 2, 2026
LMArena VisionLMArena	1268 Elo · #26 of 77	LMArena	Oct 2, 2026
LMArena AgentLMArena	0.1252 · #3 of 48	LMArena	Oct 2, 2026

Providers

Providers

Claude Sonnet 5.5 (batch)

Providers

Pricing

Cost by volume

Benchmarks

Respan Index#6 of 138

Certified where it counts.

Published scores

Apps