Anthropic: Claude Opus 4.8
The Anthropic Claude Opus 4.8 is an AI model that supports input and output of various formats, including text, image, and file. It has a high context length of 1 million tokens, allowing for detailed analysis and processing of complex data. Considering its pricing, which is $5.0 per million input tokens and $25.0 per million output tokens, this model may be worth shortlisting by organizations or individuals with substantial budget for AI services and requiring models with robust reasoning capabilities. The model's benchmark standing, a blended score of 87.8 across two independent benchmarks, also suggests it is competitive in its field.
Benchmark results
Independent, published benchmarks. Blended score 84.3 across 2 benchmarks, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 69.0 |
| EQ-Bench | emotional understanding in dialogue | 83.3 |
- Model ID
- anthropic/claude-opus-4.8
- Vendor
- anthropic
- Released
- May 2026
- Tokenizer
- Claude
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $5.00/M input and $25.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.19 |
| Classify 1,000 customer emails | 500k in / 50k out | $3.75 |
| A month of a busy support chatbot | 5M in / 2M out | $75.00 |
Category rankings
Where Anthropic: Claude Opus 4.8 places across the 25 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #13 | Legal ResearchProfessional · of 25 ranked | 158 |
| #13 | Scientific ResearchProfessional · of 25 ranked | 158 |
| #13 | Fiction CollaboratorPersonal · of 25 ranked | 158 |
| #13 | Literature ReviewResearch · of 25 ranked | 158 |
| #15 | Contract ReviewProfessional · of 25 ranked | 162 |
| #16 | Long-Context Q&AAgents · of 25 ranked | 148 |
| #20 | Code RefactoringCode · of 25 ranked | 152 |
| #20 | Creative WritingWriting · of 25 ranked | 146 |
| #20 | Screenwriting & DialogWriting · of 25 ranked | 146 |
| #20 | Academic WritingWriting · of 25 ranked | 146 |
| #20 | Legal DraftingProfessional · of 25 ranked | 146 |
| #20 | OKRs & Strategic PlanningBusiness · of 25 ranked | 146 |
| #20 | RAG PipelinesAgents · of 25 ranked | 152 |
| #20 | Math ProofsResearch · of 25 ranked | 146 |
| #21 | History TutoringEducation · of 25 ranked | 137 |
| #22 | Code ReviewCode · of 25 ranked | 150 |
| #22 | Bug FixingCode · of 25 ranked | 154 |
| #22 | Essay GradingEducation · of 25 ranked | 150 |
| #22 | RFP ResponseBusiness · of 25 ranked | 156 |
| #22 | Scientific CodingResearch · of 25 ranked | 154 |
| #23 | ETL ScriptingData · of 25 ranked | 141 |
| #23 | Long-Document SummarizationWriting · of 25 ranked | 151 |
| #23 | Medical Note SummarizationProfessional · of 25 ranked | 141 |
| #24 | Agent WorkflowsAgents · of 25 ranked | 158 |
| #24 | Coding AgentsAgents · of 25 ranked | 158 |
Similar models
Anthropic: Claude Fable 5.1 (batch)
Anthropic: Claude Opus 5
Anthropic: Claude Fable 5 (batch)
Anthropic: Claude Opus 4.7
Anthropic: Claude Opus 4.6
Anthropic: Claude Opus 4.5
Quick answers
- How much does Anthropic: Claude Opus 4.8 cost?
- $5.00 per million input tokens and $25.00 per million output tokens.
- What is Anthropic: Claude Opus 4.8's context window?
- 1,000,000 tokens, roughly 1,500 pages of text in a single request.
- Does Anthropic: Claude Opus 4.8 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Anthropic: Claude Opus 4.8 process images?
- Yes, it accepts image input.