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ANTHROPIC / claude-sonnet-5-5

Claude Sonnet 5.5

Sonnet update for everyday tasks, code, and documents, with improved speed and a million tokens of context.

01 / SUMMARY

The essential

ORIENTATIONBalanced intelligence and speed

Primary use stated or inferred cautiously from official documentation.

CONTEXT1,000,000 tokens

Maximum input capacity when published by the source.

EXIT128,000 tokens

Documented maximum generation limit.

ACCESSClaude API and associated clouds

Verified availability channels.

MODEL TYPEText and reasoning · Code

Primary functional family and verified specialties.

LICENSEProprietary

Declared terms for API access, model weights, or self-hosting.

02 / TECHNICAL SHEET

Limits and integration

API IDclaude-sonnet-5-5
Model typeText and reasoning · Code
Access modelPaid proprietary
LicenseProprietary
DeploymentHosted API
Release28 SEP 2026
Knowledge cutoffJUN 2026
EntranceText · Image
ExitText
Context window1,000,000 tokens
maximum output128,000 tokens
ReasoningAdaptive thinking · configurable effort
Published toolsUse of tools · Web search · Code execution · Computer use
Structured OutingsSupported
Batch processingCompatible · 50% discount
Prompt cacheSupported
Fine-tuningNot published
Verified platformsClaude API · Amazon Bedrock · Google Cloud · Microsoft Foundry
BEST SUITED FOR

Everyday coding, documents, and agents with a controlled budget.

WORTH MONITORING

When migrating from Sonnet 5, some thinking and tool contracts change.

03 / CAPABILITIES

What it can do

01

Orientation

Everyday coding, documents, and agents with a controlled budget.

02

Context

1.000.000 tokens · 128.000 tokens

03

Tools and integration

Tool use · Web search · Code execution · Computer use

04

Access

Claude API and associated clouds

Input modalities
TextImage
04 / PRICES

Documented cost

ConceptWorthUnit/condition
Standard input2,00 USD / 1 M tokensStandard API rate
Cached input0,20 USD / 1 M tokensReading reused prefixes
Cache write or storage2,50–4,00 USD / 1 M tokensThe condition varies by provider
Standard output10.00 USD / 1 M tokensMay include reasoning tokens
Batch inputNot publishedAsynchronous processing
Batch outputNot publishedAsynchronous processing

Consult the primary source before budgeting for a deployment.

i Prices change and may depend on level, region or context length. Check the source before making a decision.

05 / EVALUATIONS

How to read the results

“

A public benchmark provides guidance, but does not replace an evaluation with your data, tools, budget, and error tolerance.

BenchmarkResultMetricSource
Terminal-Bench 4.070,6 %AccuracyView source ↗

Inferama only highlights a “best result” when the metric, test set, configuration, and date allow for an equivalent comparison. The supplier's figures are presented as claims from its own source.

06 / VERSIONS

Chronology

Claude Sonnet 5.5

Version added to Inferama's verified catalog.

07 / SOURCES

Traceability