Anthropic model product
Claude Opus 5.5
5 is a Claude model for long-running agentic coding and knowledge work.
Updated Nov 11, 2026. Default version: Claude Opus 5.5
LLMBoard Score95.5Claude Opus 5.5
Coverage40%32 benchmark families
Context window1MTokens
Official input price$4Anthropic API
Claude Opus 5.5 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Claude Opus 5.5 Benchmark Results
Benchmark scores for Claude Opus 5.5.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkArXivMath | Score91.20% | Rank01 | Participants5 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkFrontierCode 1.1 | Score54.40% | Rank01 | Participants24 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkHumanity's Last Exam (no tools, text-only) | Score64.40% | Rank01 | Participants14 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkHumanity's Last Exam (with tools, text-only) | Score67.70% | Rank01 | Participants12 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOSWorld 2.0 | Score81.80% | Rank01 | Participants17 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkProgram Bench | Score91.20% | Rank01 | Participants20 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkAA-Briefcase v1.1 | Score1,822.00 points | Rank01 | Participants7 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkGDPval-AA 2.1 | Score1,846.00 points | Rank01 | Participants8 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkToolathlon-Verified | Score77.80% | Rank01 | Participants6 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkBenchCAD | Score73.00% | Rank02 | Participants8 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkBenchCAD (with Python tool) | Score96.20% | Rank02 | Participants8 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkBioMysteryBench | Score89.30% | Rank02 | Participants8 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkGlobal-MMLU | Score94.30% | Rank02 | Participants9 | Percentile87.50% | EvidenceC | Evaluated |
| BenchmarkSWE-bench Multilingual | Score93.90% | Rank02 | Participants52 | Percentile98.04% | EvidenceC | Evaluated |
| BenchmarkSWE-Bench Multimodal | Score61.40% | Rank02 | Participants8 | Percentile85.71% | EvidenceC | Evaluated |
| BenchmarkSWE-Bench Pro | Score89.90% | Rank02 | Participants65 | Percentile98.44% | EvidenceC | Evaluated |
| BenchmarkLM Arena Agent Bash Recovery Steps | Score13.55% | Rank02 | Participants44 | Percentile97.67% | EvidenceA | Evaluated |
| BenchmarkLM Arena Text Factuality | Score1,505.53 rating | Rank02 | Participants134 | Percentile99.25% | EvidenceA | Evaluated |
| BenchmarkLM Arena Vision | Score1,323.80 rating | Rank02 | Participants113 | Percentile99.11% | EvidenceA | Evaluated |
| BenchmarkCursorBench 4.0 | Score57.80% | Rank02 | Participants4 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkFrontierSWE V2 | Score62.30% | Rank02 | Participants7 | Percentile83.33% | EvidenceC | Evaluated |
| BenchmarkLatchBio SingleCellBench | Score61.20% | Rank02 | Participants4 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkLatchBio SpatialBench Verified | Score72.00% | Rank02 | Participants3 | Percentile50.00% | EvidenceC | Evaluated |
| BenchmarkMILU | Score93.10% | Rank02 | Participants4 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkOfficeQA | Score78.90% | Rank02 | Participants4 | Percentile66.67% | EvidenceC | Evaluated |
| BenchmarkHealthBench | Score60.60% | Rank03 | Participants16 | Percentile86.67% | EvidenceC | Evaluated |
| BenchmarkLM Arena Text | Score1,513.00 rating | Rank03 | Participants221 | Percentile99.09% | EvidenceA | Evaluated |
| BenchmarkLM Arena Text Style Control | Score1,506.07 rating | Rank03 | Participants221 | Percentile99.09% | EvidenceA | Evaluated |
| BenchmarkChartography | Score89.00% | Rank04 | Participants8 | Percentile57.14% | EvidenceC | Evaluated |
| BenchmarkHealthBench Professional | Score65.60% | Rank04 | Participants22 | Percentile85.71% | EvidenceC | Evaluated |
Claude Opus 5.5 Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenatext | Categorykorean | Rank01 | Rating / score1,504.91 | Votes229 | ObservationsN/A | Result date |
| Arenatext factuality | Categorycreative writing | Rank01 | Rating / score1,508.84 | Votes3,608 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryenglish | Rank01 | Rating / score1,518.05 | Votes5,608 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryexpert | Rank01 | Rating / score1,548.13 | Votes1,293 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryhard prompts english | Rank01 | Rating / score1,546.48 | Votes3,510 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryinstruction following | Rank01 | Rating / score1,524.98 | Votes5,260 | ObservationsN/A | Result date |
| Arenatext factuality | Categorymath | Rank01 | Rating / score1,518.89 | Votes589 | ObservationsN/A | Result date |
| Arenatext style control | Categorykorean | Rank01 | Rating / score1,491.49 | Votes229 | ObservationsN/A | Result date |
| Arenavision | Categorydiagram | Rank01 | Rating / score1,353.92 | Votes1,167 | ObservationsN/A | Result date |
| Arenaagent bash recovery steps | Categoryoverall | Rank02 | Rating / score0.14 | VotesN/A | Observations23.3K | Result date |
| Arenatext | Categorycoding | Rank02 | Rating / score1,542.21 | Votes3,339 | ObservationsN/A | Result date |
| Arenatext | Categorycreative writing | Rank02 | Rating / score1,532.23 | Votes3,680 | ObservationsN/A | Result date |
| Arenatext factuality | Categorycoding | Rank02 | Rating / score1,561.92 | Votes3,286 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryexclude ties | Rank02 | Rating / score1,520.93 | Votes11,439 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryhard prompts | Rank02 | Rating / score1,531.63 | Votes9,571 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryindustry life and physical and social science | Rank02 | Rating / score1,530.54 | Votes2,269 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryindustry software and it services | Rank02 | Rating / score1,543.59 | Votes5,134 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryindustry writing and literature and language | Rank02 | Rating / score1,512.68 | Votes4,634 | ObservationsN/A | Result date |
| Arenatext factuality | Categorynon english | Rank02 | Rating / score1,492.03 | Votes9,627 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryoverall | Rank02 | Rating / score1,505.53 | Votes15,249 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryrussian | Rank02 | Rating / score1,515.04 | Votes1,953 | ObservationsN/A | Result date |
| Arenatext style control | Categorycreative writing | Rank02 | Rating / score1,517.83 | Votes3,680 | ObservationsN/A | Result date |
| Arenavision | Categoryhomework | Rank02 | Rating / score1,356.90 | Votes689 | ObservationsN/A | Result date |
| Arenavision | Categoryocr | Rank02 | Rating / score1,332.35 | Votes3,329 | ObservationsN/A | Result date |
| Arenavision | Categoryoverall | Rank02 | Rating / score1,323.80 | Votes4,789 | ObservationsN/A | Result date |
| Arenavision style control | Categoryhomework | Rank02 | Rating / score1,345.04 | Votes689 | ObservationsN/A | Result date |
| Arenatext | Categoryenglish | Rank03 | Rating / score1,520.69 | Votes5,619 | ObservationsN/A | Result date |
| Arenatext | Categoryexclude ties | Rank03 | Rating / score1,532.96 | Votes11,439 | ObservationsN/A | Result date |
| Arenatext | Categoryexpert | Rank03 | Rating / score1,553.03 | Votes1,498 | ObservationsN/A | Result date |
| Arenatext | Categoryhard prompts | Rank03 | Rating / score1,530.88 | Votes9,571 | ObservationsN/A | Result date |
Claude Opus 5.5 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $4 input, $20 output per 1M
- Official provider
- Anthropic
- Lowest third-party
- From $4 input, $20 output per 1M via Azure Cognitive Services
- Tracked offerings
- 35
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderAzure Cognitive Services | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderVertex | Provider model IDclaude-opus-5-5@default | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderAnthropic | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderVenice AI | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderKilo Gateway | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderAzure | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderAmazon Bedrock | Provider model IDanthropic.claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderMerge Gateway | Provider model IDanthropic/claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderOpenRouter | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderVertex (Anthropic) | Provider model IDclaude-opus-5-5@default | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderNanoGPT | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderLLM Gateway | Provider model IDanthropic/claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderVercel AI Gateway | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderOfox | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderGitHub Copilot | Provider model IDclaude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderEden AI | Provider model IDanthropic/claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderOpenCode | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderRequesty | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderDevPass (LLM Gateway) | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderCrossModel | Provider model IDanthropic/claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderCloudflare AI Gateway | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderAIHubMix | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderVivgrid | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderZenMux | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| Provider302.AI | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderNeon | Provider model IDclaude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderNEAR AI Cloud | Provider model IDanthropic/claude-opus-5-5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderAI/ML API | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderPrime Inference | Provider model IDanthropic/claude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
| ProviderBoundless | Provider model IDclaude-opus-5.5 | Regionglobal | Input / 1M$4 | Output / 1M$20 | Context1M | Updated |
Claude Opus 5.5 Runtime Performance
Provider-specific output speed and catalog latency for Claude Opus 5.5. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Claude Opus 5.5 Specifications
Technical details for the model's default version.
- Version
- Claude Opus 5.5
- Released
- Sep 22, 2026
- Knowledge cutoff
- Jun 1, 2026
- Parameters
- N/A
- Context window
- 1M
- Max output
- 128K
- Inputs
- image, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Claude Opus 5.5 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionClaude Opus 5.5 | Released | LLMBoard95.53 | ParametersN/A | Context1M | Max output128K | Open weightsNo | LicenseProprietary |
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What is Claude Opus 5.5?
Key information about Claude Opus 5.5 and its available data.
5 is a large language model from Anthropic for long-running agentic coding and knowledge work.
Data as of 2026-11-10.
FAQ
Common questions about Claude Opus 5.5.
When was Claude Opus 5.5 released?
Claude Opus 5.5's default version was released on Sep 22, 2026.
How much does Claude Opus 5.5 cost?
Claude Opus 5.5's official API price is $4 per million input tokens and $20 per million output tokens via Anthropic. The lowest tracked third-party offer starts at $4 input and $20 output via Azure Cognitive Services.
Who created Claude Opus 5.5?
Claude Opus 5.5 was created by Anthropic.
What is the context window for Claude Opus 5.5?
The default version has a 1M token context window.
Is Claude Opus 5.5 open weight?
No. The default version is not marked as having publicly available weights.