Claude Sonnet 4.6

Anthropic · Closed weights · Released Feb 17, 2026 · $3 in · $15 out per 1M tokens

29Overall · rank 31

Score by job

33 · rank 27 · 5 of 5 benchmarks

Benchmark	Result	Variant	z
DeepSWE	29.9%	claude-sonnet-4-6_high	-1.74
Terminal-Bench	53.4%	claude-sonnet-4-6_unknown	-1.39
FrontierCode	24.3%	claude-sonnet-4-6_unknown	-1.58
SWE-bench Verified	75.2%	claude-sonnet-4-6	-0.35
LMArena Coding	1504 rating	claude-sonnet-4-6	0.64

13 · rank 15 · 2 of 4 benchmarks

Benchmark	Result	Variant	z
APEX-Agents	43.0%	claude-sonnet-4-6_high	-0.89
OSWorld 2.0	9.3%	claude-sonnet-4-6_medium	-0.95

22 · rank 33 · 2 of 4 benchmarks

Benchmark	Result	Variant	z
GPQA Diamond	87.4%	claude-sonnet-4-6_32K	-1.69
ARC-AGI-2	60.4%	claude-sonnet-4-6_high	-0.16

12 · rank 37 · 3 of 5 benchmarks

Benchmark	Result	Variant	z
OTIS Mock AIME	85.8%	claude-sonnet-4-6_32K	-2.40
ProofBench	45.0%	claude-sonnet-4-6_max	-0.11
LMArena Math	1462 rating	claude-sonnet-4-6	-0.69

63 · rank 23 · 2 of 2 benchmarks

Benchmark	Result	Variant	z
LMArena Creative Writing	1436 rating	claude-sonnet-4-6	-0.44
LMArena Instruction Following	1477 rating	claude-sonnet-4-6	0.47

33 · rank 28 · 1 of 1 benchmarks

Benchmark	Result	Variant	z
LMArena WebDev	1521 rating	claude-sonnet-4-6	-0.37