Primary use stated or inferred cautiously from official documentation.
Claude Opus 5.5
Next-generation Opus for agentic coding, computer use, and extended professional work, with a one-million-token context.
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.
Limits and integration
| API ID | claude-opus-5-5 |
|---|---|
| Model type | Text and reasoning · Code |
| Access model | Paid proprietary |
| License | Proprietary |
| Deployment | Hosted API |
| Release | 22 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 |
Complex migrations, long-running agents, and professional analysis.
The cost per task depends on the effort level and tool usage.
What it can do
Orientation
Complex migrations, long-running agents, and professional analysis.
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
Documented cost
| Concept | Worth | Unit/condition |
|---|---|---|
| Standard input | 4,00 USD / 1 M tokens | Standard API rate |
| Cached input | 0,20 USD / 1 M tokens | Reading reused prefixes |
| Cache write or storage | 5.00 USD / 1 M tokens | The condition varies by provider |
| Standard output | 20,00 USD / 1 M tokens | May include reasoning tokens |
| Batch input | Not published | Asynchronous processing |
| Batch output | Not published | Asynchronous 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.
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 | 66,4 % | Accuracy | View source ↗ |
| GDPval-AA v2.1 | 1.846 | Elo | 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.
Chronology
Claude Opus 5.5
Version added to Inferama's verified catalog.
Related analysis
Claude Opus 5.5 in production: how to estimate cost per task
The supplied documentation shows figures of $4 and $20 for Claude Opus 5.5, but the available evidence does not confirm the billing unit. This guide provides a formula, conditional scenarios, and a method for measuring your workload without treating cache or batch-processing rates as verified.
17 Oct 2026 ↗ COMPARATIVAClaude Opus 5.5 vs. Sonnet 5.5 for support triage: what to measure before choosing
There are no verified results from a shared test of these models on query classification, extraction, and escalation. This guide proposes a reproducible protocol for comparing them without confusing general benchmarks with operational results.
05 Oct 2026 ↗ ANALISISClaude Opus 5.5 and Prompt Injection: What the Security Test Shows—and What We Still Don’t Know
Anthropic says Claude Opus 5.5 tied with Fable 5.1 for the lowest prompt-injection success rate among the models Gray Swan evaluated. The supplied documentation does not let us verify the figure, protocol, or conditions behind that comparison. Here is what can be said—and what still needs verification.
01 Oct 2026 ↗