Claude Opus 4.1
Flagship Claude model for deep reasoning, coding, and long-horizon agents
- Context
- 200K
- Released
- 1y ago
- Input / 1M tokens
- $15.00
- Output / 1M tokens
- $75.00
- Cached input / 1M tokens
- $1.50
- Cache write / 1M tokens
- $18.75
Sources:models.devOpenRouter
Benchmarks
DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.
Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.
No benchmark results have been matched to this model yet.
Specifications
- Developer
- Anthropic
- Model family
- Claude
- Type
- Language model
- Predecessor
- —
- Successor
- —
- Released
- August 5, 2025
- Model ID
anthropic/claude-opus-4.1- Openness
- Closed
- License
- —
- Input modalities
- image, text, file
- Output modalities
- text
- Modality
- text+image+file->text
- Tokenizer
- Claude
- Max output tokens
- 32K
- Knowledge cutoff
- 2025-03-31
- Hugging Face
- —
- Source freshness
- Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
- Source model
- anthropic/claude-opus-4-1
- Source family
- claude-opus
- Last updated
- 2025-08-05
- Knowledge cutoff
- 2025-03-31
- Model context
- 200K
- Model output limit
- 32K
- Open weights
- No
- File attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Temperature control
- Yes
Complete source record (JSON)
{
"id": "anthropic/claude-opus-4-1",
"name": "Claude Opus 4.1 (latest)",
"description": "Flagship Claude model for deep reasoning, coding, and long-horizon agents",
"family": "claude-opus",
"last_updated": "2025-08-05",
"knowledge": "2025-03-31",
"attachment": true,
"reasoning": true,
"tool_call": true,
"temperature": true,
"modalities": {
"input": [
"text",
"image",
"pdf"
],
"output": [
"text"
]
},
"limit": {
"context": 200000,
"output": 32000
},
"release_date": "2025-08-05",
"open_weights": false
}Infrastructure
Provider availability
| Provider | Endpoint | Context | Input /M tokens | Output /M tokens | Cached input /M tokens | Cache write /M tokens | Uptime 1d | Data handling |
|---|---|---|---|---|---|---|---|---|
 Amazon Bedrock | amazon-bedrock | 200K | $15.00 | $75.00 | $1.50 | $18.75 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 |
| Amazon Bedrock | amazon-bedrockBatch pricing | 200K | $15.00 | $75.00 | $1.50 | $18.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 |
Provider data:OpenRouter
Text provenance
TransitioningClaude text watermarking
Anthropic says Claude models launched before August 2, 2026 have a transition period and are being moved to the same watermarking system over time.
Official explanation