name = "Claude Sonnet 4.6"
description = "Claude workhorse for coding agents, careful analysis, and production cost control"
family = "claude-sonnet"
release_date = "2026-02-17"
last_updated = "2026-03-13"
attachment = true
reasoning = true
temperature = true
tool_call = true
knowledge = "2025-08-31"
open_weights = false

[limit]
context = 1_000_000
output = 64_000

[modalities]
input = ["text", "image", "pdf"]
output = ["text"]

[[benchmarks]]
name = "SWE-Atlas Codebase QnA"
score = 31.2
metric = "score"
harness = "Claude Code"
source = "https://labs.scale.com/leaderboard/sweatlas-qna"

[[benchmarks]]
name = "SWE-Atlas Refactoring"
score = 32.21
metric = "score"
harness = "Claude Code"
source = "https://labs.scale.com/leaderboard/sweatlas-refactoring"

[[benchmarks]]
name = "SWE-Atlas Test Writing"
score = 31.76
metric = "score"
harness = "Claude Code"
source = "https://labs.scale.com/leaderboard/sweatlas-tw"

[[benchmarks]]
name = "Artificial Analysis Coding Agent Index"
score = 49.4
metric = "average pass@1"
harness = "Claude Code"
variant = "medium"
source = "https://artificialanalysis.ai/agents/coding-agents"

[[benchmarks]]
name = "SWE-Atlas Codebase QnA"
score = 70.3
metric = "pass@1"
harness = "Claude Code"
variant = "medium"
source = "https://artificialanalysis.ai/agents/coding-agents"

[[benchmarks]]
name = "SWE-Bench Pro"
score = 14.9
metric = "pass@1"
harness = "Claude Code"
variant = "medium"
dataset = "hard-aa"
source = "https://artificialanalysis.ai/agents/coding-agents"

[[benchmarks]]
name = "Terminal-Bench"
score = 63.1
metric = "pass@1"
harness = "Claude Code"
variant = "medium"
version = "2.1"
source = "https://artificialanalysis.ai/agents/coding-agents"

[[benchmarks]]
name = "Terminal-Bench"
score = 67.0
metric = "success rate"
harness = "Terminus-2"
version = "2.1"
source = "https://www.anthropic.com/news/claude-sonnet-5"
date = "2026-06-30"

[[benchmarks]]
name = "Humanity's Last Exam"
score = 34.6
metric = "accuracy"
variant = "no tools"
source = "https://www.anthropic.com/news/claude-sonnet-5"
date = "2026-06-30"

[[benchmarks]]
name = "Humanity's Last Exam"
score = 46.8
metric = "accuracy"
variant = "with tools"
source = "https://www.anthropic.com/news/claude-sonnet-5"
date = "2026-06-30"

[[benchmarks]]
name = "OSWorld-Verified"
score = 78.5
metric = "success rate"
source = "https://www.anthropic.com/news/claude-sonnet-5"
date = "2026-06-30"