OpenAIproprietary
Released: 2025-02-27GPT-4.5
Massive scale knowledge, empathy, and broad intelligence foundation model with industry-low hallucination rates.
Intelligence Index
87.0/ 100
Calibrated multi-domain compositeThroughput Speed
42tok/sec
Output streaming throughputTime To First Token
550ms
Initial chunk server latencyLiveBench Contam-Free
71.0%
September 2026 suite scoreLiveBench Multi-Domain Evaluation Breakdown
Monthly refreshed contamination-free test setsLogical Reasoning85.0%
Coding & Repo Repair70.5%
Mathematics (AIME)80.0%
Data Analysis & Tables81.5%
Language & Comprehension86.0%
Instruction Following91.5%
Sourced Benchmark Evaluations (4)
Verified performance across authoritative benchmarks with provenance tracking.OpenAI Compatible API ExecutionAPI Ready
from openai import OpenAI
client = OpenAI()
response = client.chat.completions.create(
model="gpt-4-5",
messages=[{"role": "user", "content": "Evaluate multi-step logic problem"}],
temperature=0.2
)
print(response.choices[0].message.content)Evaluation & Sourcing Notes
Scores listed for GPT-4.5 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.