Anthropicproprietary
Released: 2024-10-22

Claude 3.5 Sonnet (v2)

Foundation model evaluated on LiveBench September 2026 by Anthropic.

Intelligence Index
87.9/ 100
Calibrated multi-domain composite
Throughput Speed
—tok/sec
Output streaming throughput
Time To First Token
—ms
Initial chunk server latency
LiveBench Contam-Free
78.5%
September 2026 suite score

LiveBench Multi-Domain Evaluation Breakdown

Monthly refreshed contamination-free test sets
Logical Reasoning83.5%
Coding & Repo Repair79.2%
Mathematics (AIME)82.0%
Data Analysis & Tables76.0%
Language & Comprehension75.5%
Instruction Following75.0%

Sourced Benchmark Evaluations (61)

Verified performance across authoritative benchmarks with provenance tracking.
BenchmarkStatusScoreTrustDateSource TypeProvenance
LiveBench (Continuous)Active78.5%
94
2025-02-01independentSource ↗
ARC-AGI-3Active54.3%
93
2024-11-26independentSource ↗
ARC-AGI-2Nearing Saturation65.1%
75
2024-11-19independentSource ↗
FrontierMathActive23%
98
2024-11-16independentSource ↗
PutnamBenchActive42.6%
90
2024-11-15independentSource ↗
Omni-MATHDeprecated60.7%
10
2024-11-13independentSource ↗
SWE-LancerDeprecated53.9%
20
2024-11-13independentSource ↗
SoohakActive62.3%
98
2024-11-11independentSource ↗
FrontierCodeActive45.9%
98
2024-11-11independentSource ↗
Humanity's Last ExamActive36.7%
93
2024-11-09independentSource ↗
StructFlowBenchNearing Saturation63.8%
75
2024-11-09independentSource ↗
AIMENearing Saturation77.9%
75
2024-11-09independentSource ↗
OlympiadBenchActive67.2%
80
2024-11-08independentSource ↗
FireBenchActive63%
95
2024-11-07independentSource ↗
Terminal-BenchActive55.4%
80
2024-11-07independentSource ↗
MathArenaActive65.6%
99
2024-11-07independentSource ↗
OpenAI-MRCRActive73.8%
80
2024-11-06independentSource ↗
CodeContestsDeprecated51.5%
10
2024-11-06independentSource ↗
SimpleQAActive45.7%
90
2024-11-06independentSource ↗
ComplexBenchNearing Saturation61.5%
80
2024-11-05independentSource ↗
SWE-bench ProActive49.1%
90
2024-11-05independentSource ↗
LongBench-ProActive72.1%
80
2024-11-05independentSource ↗
MultiPL-EDeprecated72.9%
10
2024-11-04independentSource ↗
ZeroSCROLLSNearing Saturation70.3%
78
2024-11-04independentSource ↗
AgentIFNearing Saturation51%
80
2024-11-03independentSource ↗
MATHSaturated80.4%
25
2024-11-03independentSource ↗
LiveCodeBenchSaturated64.9%
39
2024-11-03independentSource ↗
InfiniteBenchNearing Saturation74.7%
65
2024-11-03independentSource ↗
MMLU-ProNearing Saturation80.9%
75
2024-11-02independentSource ↗
MercuryDeprecated69.7%
10
2024-11-02independentSource ↗
SCROLLSNearing Saturation70.3%
65
2024-11-02independentSource ↗
RULERNearing Saturation80.9%
84
2024-11-01independentSource ↗
TabMWPSaturated75.4%
25
2024-11-01independentSource ↗
CyberSecEvalDeprecated71.3%
10
2024-11-01independentSource ↗
MMLU-ReduxSaturated86.1%
25
2024-10-31independentSource ↗
QuALITYNearing Saturation77.4%
78
2024-10-31independentSource ↗
SWE-bench VerifiedSaturated61.8%
25
2024-10-31independentSource ↗
MGSMNearing Saturation77.9%
65
2024-10-30independentSource ↗
LongBenchNearing Saturation75.6%
65
2024-10-30independentSource ↗
SWE-benchDeprecated53.9%
10
2024-10-30independentSource ↗
AGIEvalSaturated71.8%
25
2024-10-29independentSource ↗
QASPERNearing Saturation73%
65
2024-10-29independentSource ↗
TruthfulQASaturated77.4%
25
2024-10-29independentSource ↗
SuperGLUESaturated85.2%
25
2024-10-28independentSource ↗
GSM-HardDeprecated78.7%
10
2024-10-28independentSource ↗
MT-BenchNearing Saturation7.7%
75
2024-10-27independentSource ↗
BIG-Bench HardSaturated81.8%
25
2024-10-27independentSource ↗
CodeXGLUEDeprecated74.4%
23
2024-10-27independentSource ↗
MBPP+Nearing Saturation80.8%
65
2024-10-26independentSource ↗
WinoGrandeSaturated86.8%
28
2024-10-26independentSource ↗
IFEvalDeprecated73.5%
25
2024-10-26independentSource ↗
GPQANearing Saturation77.4%
78
2024-10-26independentSource ↗
HumanEval+Saturated85.5%
25
2024-10-25independentSource ↗
Needle-in-a-HaystackSaturated97.6%
44
2024-10-25independentSource ↗
CommonsenseQASaturated87.7%
28
2024-10-25independentSource ↗
GSM8KSaturated88.6%
25
2024-10-24independentSource ↗
GLUESaturated90.2%
28
2024-10-24independentSource ↗
MBPPSaturated84%
25
2024-10-24independentSource ↗
HumanEvalSaturated90.3%
25
2024-10-23independentSource ↗
MMLUSaturated89.7%
25
2024-10-23independentSource ↗
ARC-AGISaturated78.5%
25
2024-10-23independentSource ↗
Anthropic Python SDKAPI Ready
import anthropic

client = anthropic.Anthropic()
message = client.messages.create(
    model="claude-3-5-sonnet-20241022",
    max_tokens=2048,
    temperature=0,
    messages=[{"role": "user", "content": "Execute SWE-bench verified repository fix"}]
)
print(message.content[0].text)

Evaluation & Sourcing Notes

Scores listed for Claude 3.5 Sonnet (v2) represent verified evaluations extracted from official research papers, independent evaluation suites (HELM, LMSYS, OpenCompass, LiveBench), and verified audit reports.

All benchmarks marked as saturated or deprecated reflect historical performance where the benchmark no longer provides active discriminative power.