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ANTHROPIC / claude-haiku-5-5

Claude Haiku 5.5

Anthropic model released on October 7, 2026 for frequent, cost- and latency-sensitive tasks. It accepts text and images and returns text, including code; it does not generate images, audio or video. Its one-million-token window and adaptive thinking expand the Haiku family without making it a universal replacement for Sonnet or Opus on complex work.

01 / SUMMARY

The essential

ORIENTATIONClassification, extraction and subagents

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-haiku-5-5
Model typeText and reasoning · Code
Access modelPaid proprietary
LicenseProprietary
DeploymentHosted API
Release07 OCT 2026
Knowledge cutoffJUN 2026
EntranceText · Image
ExitText
Context window1,000,000 tokens
maximum output128,000 tokens
ReasoningAdaptive thinking · default medium effort
Published toolsUse of tools · Computer use · Browser use
Structured OutingsNot published
Batch processingCompatible · 50% discount
Prompt cacheSupported
Fine-tuningNot published
Verified platformsClaude API · Amazon Bedrock · Google Cloud · Microsoft Foundry · Claude Platform on AWS
BEST SUITED FOR

Classification, data extraction, summaries, conversation compaction and routing. It can act as a subagent for bounded tasks and use tools, a browser or a computer. The default effort is medium; changing effort affects cost and speed. Browser use is available on Claude API and Google Cloud, not necessarily with an identical contract across all clouds.

WORTH MONITORING

Standard maximum output is 128,000 tokens, including thinking; the 300,000-token Batch limit requires a specific beta. The new tokenizer counts approximately 30% more tokens for the same text than Haiku 4.5. Omit non-default temperature, top_p and top_k, manual thinking budgets and assistant prefill. Thinking blocks can only be reused in the account that generated them or linked accounts. Validate permissions, refusals and computer actions.

03 / CAPABILITIES

What it can do

01

Orientation

Classification, data extraction, summaries, conversation compaction and routing. It can act as a subagent for bounded tasks and use tools, a browser or a computer. The default effort is medium; changing effort affects cost and speed. Browser use is available on Claude API and Google Cloud, not necessarily with an identical contract across all clouds.

02

Context

1.000.000 tokens · 128.000 tokens

03

Tools and integration

Use of tools · Computer use · Browser use

04

Access

Claude API and associated clouds

Input modalities
TextImage
04 / PRICES

Documented cost

ConceptWorthUnit/condition
Standard input0.10 / 0.50 USD / 1 M tokensStandard API rate
Cached input0.01 / 0.05 USD / 1 M tokensReading reused prefixes
Cache write or storage0.125 / 0.625 USD (5 min); 0.20 / 1.00 USD (1 h) / 1 M tokensThe condition varies by provider
Standard output0.50 / 2.50 USD / 1 M tokensMay include reasoning tokens
Batch input0.05 / 0.25 USD / 1 M tokensAsynchronous processing
Batch output0.25 / 1.25 USD / 1 M tokensAsynchronous processing

Each pair of rates corresponds to prompts up to 100,000 tokens / over 100,000 tokens, including output and caching. Input: USD 0.10 / 0.50; output: USD 0.50 / 2.50 per million tokens. Batch discounts input and output by 50%. Caching distinguishes reads from five-minute or one-hour writes. Numeric fields represent only the short-prompt tier, not a long-context budget. Tools and regional conditions may add charges.

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

“

Eight results published by Anthropic, not reproduced by Inferama. GDPval-AA v2.1 and AA-Briefcase v1.1 are ratings, not percentages. OSWorld 2.1 uses the offline subset; Humanity’s Last Exam is recorded separately with and without tools. We retain Terminal-Bench and FrontierCode versions and Chartography’s no-tools condition. Compare configurations, effort, tools and cost per task; these figures do not guarantee your application’s results.

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 Haiku 5.5

Version added to Inferama's verified catalog.

07 / SOURCES

Traceability