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Measurement sources and verification status (12 fields)

Collected third-party figures are not independent tests. A source link and collection date do not establish reproducibility. Exact model version, dataset and test settings may be missing. No independent verification date is supplied.

speed: 140

latency: 0.48

contextWindow: 400000

inputPrice: 1.25

outputPrice: 10

benchmarkMmlu: 92.8

benchmarkHumanEval: 94

benchmarkMath: 96.5

benchmarkGpqa: 48

reasoningScore: 63

codingScore: 70

benchmarkSweBench: 62

OpenAI: GPT-5 Codex

openai🔒 Proprietary

LLM Stats Scores

63.0

Reasoning

70.0

Coding

🎯

48.0%GPQA Diamond — graduate-level science accuracy

Published benchmark evidence

Task scores are reported independently by each publisher; they are not combined into a hidden quality score.

View HLE source ↗

27.8%

Humanity's Last Exam

62.0%

SWE-bench

Quality Score

83.0

Overall (0–100)

Speed

140 c/s

characters/second

Latency (TTFT)

0.48s

to first token

Input Price

$1.25

per 1M tokens

Output Price

$10

per 1M tokens

Context Window

400K

tokens

Release Date

2025-09-23

30-Day Rank History

📊 Benchmark Scores

Reported scores · % accuracy

What do these benchmarks test?

🎯

GPQA Diamond48.0%Below avg

Designed so that even PhD-level human experts average ~65–70%. A score above 80% signals near-expert scientific reasoning that goes far beyond memorisation.

🧠

MMLU92.8%Top tier

The classic academic breadth benchmark. Top frontier models now score above 85%, so it best distinguishes mid-tier from strong generalist models.

💻

HumanEval94.0%Top tier

Measures whether a model writes functionally correct code — not just plausible-looking syntax. Strong scores (>85%) indicate reliable day-to-day coding assistance.

∑

MATH Benchmark96.5%Top tier

Tests multi-step mathematical reasoning under strict correctness. Even a 60% score requires strong chain-of-thought; top reasoning models now exceed 90%.