Anthropicproprietary
Released: 2024-06-01

Claude Sonnet 4 + SWE-agent (public, launch revision)

AI Model evaluated in benchmark studies from Anthropic.

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

Sourced Benchmark Evaluations (1)

Verified performance across authoritative benchmarks with provenance tracking.
BenchmarkStatusScoreTrustDateSource TypeProvenance
SWE-bench ProActive17.6%
90
2024-06-01independentSource ↗
Anthropic Python SDKAPI Ready
import anthropic

client = anthropic.Anthropic()
message = client.messages.create(
    model="claude-sonnet-4-swe-agent-public-launch-revision",
    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 Sonnet 4 + SWE-agent (public, launch revision) 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.