# Specs: https://platform.claude.com/docs/en/models/sonnet-5-5/overview
# Evaluations: https://www.anthropic.com/claude-sonnet-5-5
name = "Claude Sonnet 5.5"
description = "Fast Claude model for everyday coding, agents, and knowledge work"
family = "claude-sonnet"
release_date = "2026-09-28"
last_updated = "2026-09-28"
attachment = true
reasoning = true
temperature = false
tool_call = true
open_weights = false
knowledge = "2026-06"

[limit]
context = 1_000_000
output = 128_000

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

[[benchmarks]]
name = "Terminal-Bench"
score = 70.6
metric = "score"
version = "4.0"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"

[[benchmarks]]
name = "FrontierCode"
score = 46.2
metric = "score"
variant = "max effort"
version = "1.1"
dataset = "Main"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"

[[benchmarks]]
name = "CursorBench"
score = 55.5
metric = "score"
version = "4.0"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"

[[benchmarks]]
name = "GDPval-AA"
score = 1844
metric = "Elo"
version = "2.1"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"

[[benchmarks]]
name = "Humanity's Last Exam"
score = 64.5
metric = "score"
variant = "with tools"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"

[[benchmarks]]
name = "OSWorld"
score = 80.1
metric = "partial score"
version = "2.1"
source = "https://www.anthropic.com/claude-sonnet-5-5"
date = "2026-09-28"