Primary use stated or inferred cautiously from official documentation.
A
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
Maximum input capacity when published by the source.
Documented maximum generation limit.
Verified availability channels.
Primary functional family and verified specialties.
Declared terms for API access, model weights, or self-hosting.
02 / TECHNICAL SHEET
Limits and integration
| API ID | claude-sonnet-5-5 |
|---|---|
| Model type | Text and reasoning · Code |
| Access model | Paid proprietary |
| License | Proprietary |
| Deployment | Hosted API |
| Release | 28 SEP 2026 |
| Knowledge cutoff | JUN 2026 |
| Entrance | Text · Image |
| Exit | Text |
| Context window | 1,000,000 tokens |
| maximum output | 128,000 tokens |
| Reasoning | Adaptive thinking · configurable effort |
| Published tools | Use of tools · Web search · Code execution · Computer use |
| Structured Outings | Supported |
| Batch processing | Compatible · 50% discount |
| Prompt cache | Supported |
| Fine-tuning | Not published |
| Verified platforms | Claude API · Amazon Bedrock · Google Cloud · Microsoft Foundry |
Everyday coding, documents, and agents with a controlled budget.
When migrating from Sonnet 5, some thinking and tool contracts change.
03 / CAPABILITIES
What it can do
Orientation
Everyday coding, documents, and agents with a controlled budget.
Context
1.000.000 tokens · 128.000 tokens
Tools and integration
Tool use · Web search · Code execution · Computer use
Access
Claude API and associated clouds
Input modalities
TextImage
04 / PRICES
Documented cost
| Concept | Worth | Unit/condition |
|---|---|---|
| Standard input | 2,00 USD / 1 M tokens | Standard API rate |
| Cached input | 0,10 USD / 1 M tokens | Reading reused prefixes |
| Cache write or storage | 2,50–4,00 USD / 1 M tokens | The condition varies by provider |
| Standard output | 10.00 USD / 1 M tokens | May include reasoning tokens |
| Batch input | Not published | Asynchronous processing |
| Batch output | Not published | Asynchronous processing |
Since October 7, 2026, cache reads cost USD 0.10 per million tokens, previously 0.20. Standard input and output remain USD 2.00 and 10.00; Batch remains 1.00 and 5.00. Cache writes cost USD 2.50 for five minutes or 4.00 for one hour. Total savings depend on the share of cached tokens and tools; this is not a fixed discount on every task.
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.
| Benchmark | Result | Metric | Source |
|---|---|---|---|
| Terminal-Bench 4.0 | 70,6 % | Accuracy | View 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.
ANALYSIS
Related analysis
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05 Oct 2026 ↗
Claude Sonnet 5.5 under scrutiny: what its speed, cost and performance figures mean
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01 Oct 2026 ↗07 / SOURCES