Anthropic: Claude Sonnet 5.5

Anthropic: Claude Sonnet 5.5 is a large language model from Anthropic. It costs $2.00 per million input tokens and $10.00 per million output tokens. Its context window is 1M tokens.

ReasoningTool callingStructured outputPrompt cachingBatch tierimage inputfile input

Input / 1M tokens: $2.00
Output / 1M tokens: $10.00
Cached input / 1M: $0.100
Context window: 1M

This model also charges $0.01 per search request

That is $10.00 per 1,000 requests, billed on top of the token prices above. On a typical 1,000-in / 500-out exchange the tokens cost $0.007, so the search fee is 1.4× the token cost. Per-token rankings elsewhere ignore this entirely.

Who serves it cheapest

5 hosts serve Claude Sonnet 5.5. Same weights, same API - the price difference is pure margin and routing.

Providers serving Anthropic: Claude Sonnet 5.5, cheapest first
Provider	Input / 1M	Output / 1M	Context	Throughput	Uptime 24h
GoogleCheapest	$2.00	$10.00	1M	-	100.0%
Amazon Bedrock	$2.00	$10.00	1M	-	100.0%
Azure	$2.00	$10.00	1M	-	100.0%
Claude Platform on AWS	$2.00	$10.00	1M	-	100.0%
Anthropic	$2.00	$10.00	1M	-	100.0%

The spread between Google and Anthropic is about the same for identical weights. Quantization and context limits differ, so check both columns before switching.

Benchmarks

Independent scores published alongside the catalogue.

Intelligence index: 56.0

About Claude Sonnet 5.5

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...

Specifications

Anthropic: Claude Sonnet 5.5 specifications
Model ID	`anthropic/claude-sonnet-5.5`
Provider	Anthropic
Context window	1M tokens
Max output	128K tokens
Input modalities	text, image, file
Output modalities	text
Knowledge cutoff	-
Open weights	No
Released	September 28, 2026

Cheaper alternatives

Models that cost less than Claude Sonnet 5.5 while keeping at least half its context window and every input modality it supports.

GPT-4.1

$2.00 in · $8.00 out

1.1× cheaper

Gemini 2.5 Pro

$1.25 in · $10.00 out

1.2× cheaper

Gemini 2.5 Pro Preview 06-05

$1.25 in · $10.00 out

1.2× cheaper

Gemini 3.5 Flash

$1.50 in · $9.00 out

1.2× cheaper

Grok 4.7

$2.00 in · $6.00 out

1.3× cheaper

Frequently asked

How much does Anthropic: Claude Sonnet 5.5 cost?

$2.00 per million input tokens and $10.00 per million output tokens. Cached input reads cost $0.100 per million tokens.

What is the context window of Anthropic: Claude Sonnet 5.5?

1M tokens, with up to 128K tokens of output per request.

Does Anthropic: Claude Sonnet 5.5 have extra fees beyond per-token pricing?

Yes. Anthropic: Claude Sonnet 5.5 charges $0.01 per search request - $10.00 per 1,000 requests - on top of $2.00 per million input tokens and $10.00 per million output tokens. On a typical 1,000-input / 500-output exchange the search fee alone is 1.4× the token cost.

Which provider serves Anthropic: Claude Sonnet 5.5 cheapest?

Google at $2.00 per million input tokens - about the same cheaper than Anthropic, the most expensive of the 5 hosts serving it.

Confirm against the source: Anthropic official pricing.