Claude Sonnet 4.6
Claude workhorse for coding agents, careful analysis, and production cost control
- Context
- 1M
- Released
- 8mo ago
- Input / 1M tokens
- $3.00
- Output / 1M tokens
- $15.00
- Cached input / 1M tokens
- $0.30
- Cache write / 1M tokens
- $3.75
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.
DeepSWE 1.1
Primary coding-agent benchmark · 113 tasks · Data generated 2026-09-22
- pass@4
- 56.6%
- Average cost / attempt
- $5.52
- Benchmark runs
- 4
pass@1 is the success rate across scored attempts; pass@4 is the share of tasks solved in at least one of four attempts. Costs are reported by DeepSWE for each configuration. These results are not directly comparable to evaluations using different harnesses. Official source JSON.
Other published benchmarks
| Evaluation | Reported score and source |
|---|---|
| ARC-AGI-2 | 60.4% Third-party evaluator · claude-sonnet-4-6_high Reasoning effort: high External evaluation via Epoch AIOriginal-source terms apply |
| ARC-AGI-2 | 58.3% Third-party evaluator · claude-sonnet-4-6_max Reasoning effort: max External evaluation via Epoch AIOriginal-source terms apply |
| FrontierMath-2025-02-28-Private | |
| FrontierMath-Tier-4-2025-07-01-Private | |
| GPQA diamond | |
| GPQA diamond | |
| GPQA diamond | |
| GPQA diamond | |
| OSWorld | 72.1% OS World Website · claude-sonnet-4-6 Agent: claude-sonnet-4-6 (100 steps) OS World WebsiteOriginal-source terms apply |
| OSWorld 2.0 | 8.3% https://osworld-v2.xlang.ai/ · claude-sonnet-4-6_max Reasoning effort: max https://osworld-v2.xlang.ai/Original-source terms apply |
| OSWorld 2.0 | 9.3% https://osworld-v2.xlang.ai/ · claude-sonnet-4-6_medium Reasoning effort: medium https://osworld-v2.xlang.ai/Original-source terms apply |
| OTIS Mock AIME 2024-2025 | |
| OTIS Mock AIME 2024-2025 | |
| OTIS Mock AIME 2024-2025 | |
| OTIS Mock AIME 2024-2025 | |
| SimpleQA Verified | |
| SimpleQA Verified | |
| SWE-Bench verified | |
| Terminal Bench | 53.4% Third-party evaluator · claude-sonnet-4-6 Agent: Simplai Agent External evaluation via Epoch AIOriginal-source terms apply |
| Terminal Bench | 53.4% https://www.tbench.ai/leaderboard/terminal-bench/2.0 · claude-sonnet-4-6_unknown Agent: Simplai Agent · Reasoning effort: unknown https://www.tbench.ai/leaderboard/terminal-bench/2.0Original-source terms apply |
Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.
Specifications
- Developer
- Anthropic
- Model family
- Claude
- Type
- Language model
- Predecessor
- —
- Successor
- —
- Released
- February 17, 2026
- Model ID
anthropic/claude-sonnet-4.6- Openness
- Closed
- License
- —
- Input modalities
- text, image, file
- Output modalities
- text
- Modality
- text+image+file->text
- Tokenizer
- Claude
- Max output tokens
- 128K
- Knowledge cutoff
- 2025-08-31
- Hugging Face
- —
- Source freshness
- Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
- Source model
- anthropic/claude-sonnet-4-6
- Source family
- claude-sonnet
- Last updated
- 2026-03-13
- Knowledge cutoff
- 2025-08-31
- Model context
- 1M
- Model output limit
- 64K
- Open weights
- No
- File attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Temperature control
- Yes
Published benchmarks
| Benchmark | Score | Evaluation details | Evidence |
|---|---|---|---|
| SWE-Atlas Codebase QnA | 31.2 · score | Claude Code | Source |
| SWE-Atlas Refactoring | 32.21 · score | Claude Code | Source |
| SWE-Atlas Test Writing | 31.76 · score | Claude Code | Source |
| Artificial Analysis Coding Agent Index | 49.4 · average pass@1 | Claude Code · medium | Source |
| SWE-Atlas Codebase QnA | 70.3 · pass@1 | Claude Code · medium | Source |
| SWE-Bench Pro | 14.9 · pass@1 | Claude Code · hard-aa · medium | Source |
| Terminal-Bench | 63.1 · pass@1 | Claude Code · medium · 2.1 | Source |
| Terminal-Bench | 67 · success rate | Terminus-2 · 2.1 · 2026-06-30 | Source |
| Humanity's Last Exam | 34.6 · accuracy | no tools · 2026-06-30 | Source |
| Humanity's Last Exam | 46.8 · accuracy | with tools · 2026-06-30 | Source |
| OSWorld-Verified | 78.5 · success rate | 2026-06-30 | Source |
Complete source record (JSON)
{
"id": "anthropic/claude-sonnet-4-6",
"name": "Claude Sonnet 4.6",
"description": "Claude workhorse for coding agents, careful analysis, and production cost control",
"family": "claude-sonnet",
"last_updated": "2026-03-13",
"knowledge": "2025-08-31",
"attachment": true,
"reasoning": true,
"tool_call": true,
"temperature": true,
"modalities": {
"input": [
"text",
"image",
"pdf"
],
"output": [
"text"
]
},
"limit": {
"context": 1000000,
"output": 64000
},
"benchmarks": [
{
"name": "SWE-Atlas Codebase QnA",
"score": 31.2,
"source": "https://labs.scale.com/leaderboard/sweatlas-qna",
"metric": "score",
"harness": "Claude Code"
},
{
"name": "SWE-Atlas Refactoring",
"score": 32.21,
"source": "https://labs.scale.com/leaderboard/sweatlas-refactoring",
"metric": "score",
"harness": "Claude Code"
},
{
"name": "SWE-Atlas Test Writing",
"score": 31.76,
"source": "https://labs.scale.com/leaderboard/sweatlas-tw",
"metric": "score",
"harness": "Claude Code"
},
{
"name": "Artificial Analysis Coding Agent Index",
"score": 49.4,
"source": "https://artificialanalysis.ai/agents/coding-agents",
"metric": "average pass@1",
"harness": "Claude Code",
"variant": "medium"
},
{
"name": "SWE-Atlas Codebase QnA",
"score": 70.3,
"source": "https://artificialanalysis.ai/agents/coding-agents",
"metric": "pass@1",
"harness": "Claude Code",
"variant": "medium"
},
{
"name": "SWE-Bench Pro",
"score": 14.9,
"source": "https://artificialanalysis.ai/agents/coding-agents",
"metric": "pass@1",
"harness": "Claude Code",
"variant": "medium",
"dataset": "hard-aa"
},
{
"name": "Terminal-Bench",
"score": 63.1,
"source": "https://artificialanalysis.ai/agents/coding-agents",
"metric": "pass@1",
"harness": "Claude Code",
"variant": "medium",
"version": "2.1"
},
{
"name": "Terminal-Bench",
"score": 67,
"source": "https://www.anthropic.com/news/claude-sonnet-5",
"metric": "success rate",
"harness": "Terminus-2",
"version": "2.1",
"date": "2026-06-30"
},
{
"name": "Humanity's Last Exam",
"score": 34.6,
"source": "https://www.anthropic.com/news/claude-sonnet-5",
"metric": "accuracy",
"variant": "no tools",
"date": "2026-06-30"
},
{
"name": "Humanity's Last Exam",
"score": 46.8,
"source": "https://www.anthropic.com/news/claude-sonnet-5",
"metric": "accuracy",
"variant": "with tools",
"date": "2026-06-30"
},
{
"name": "OSWorld-Verified",
"score": 78.5,
"source": "https://www.anthropic.com/news/claude-sonnet-5",
"metric": "success rate",
"date": "2026-06-30"
}
],
"release_date": "2026-02-17",
"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/global | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| amazon-bedrock/globalBatch pricing | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| anthropic | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| anthropicBatch pricing | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| azure/global | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 93.72% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| azure/globalBatch pricing | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 93.72% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| claude-on-aws | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| claude-on-awsBatch pricing | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/global | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/globalBatch pricing | 1M | $3.00 | $15.00 | $0.30 | $3.75 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| amazon-bedrock/us | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| amazon-bedrock/eu-west-1 | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| amazon-bedrock/usBatch pricing | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| amazon-bedrock/eu-west-1Batch pricing | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/europe | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/us-east5 | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/europeBatch pricing | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| google-vertex/us-east5Batch pricing | 1M | $3.30 | $16.50 | $0.33 | $4.13 | 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