LIVE INTELLIGENCE · part of the Xentir AI Index

GPT-3.5 Turbo (Jan 2024) vs Llama 3.1-8B

GPT-3.5 Turbo (Jan 2024) · OpenAI, released 2024-01-25
Llama 3.1-8B OPEN WEIGHTS · Meta AI, released 2024-07-23

“Epoch AI, 'AI Benchmarking Hub'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource].” · epoch.ai/benchmarks · Licensed CC BY 4.0 · data last verified 2026-07-26 · Methodology · Data Sources

Head-to-head

Measured on 3 of 9 tracked benchmarks for both models — GPT-3.5 Turbo (Jan 2024) leads on 1, Llama 3.1-8B leads on 2.

Benchmark	GPT-3.5 Turbo (Jan 2024)	Llama 3.1-8B	Leads
Epoch Capabilities Index (ECI)	114.4	115.4	Llama 3.1-8B
SWE-bench Verified	Not measured	Not measured	Not measured on both
GPQA Diamond	0.272	0.259	GPT-3.5 Turbo (Jan 2024)
MATH Level 5	0.116	0.229	Llama 3.1-8B
OTIS Mock AIME 2024-2025	Not measured	0.025	Not measured on both
FrontierMath	Not measured	Not measured	Not measured on both
FrontierMath Tier 4	Not measured	Not measured	Not measured on both
SimpleQA Verified	Not measured	Not measured	Not measured on both
Chess Puzzles	Not measured	Not measured	Not measured on both

Benchmark results measure specific tasks and should not be treated as a universal measure of model quality. A model with no row here for a benchmark has not been measured on it — that is left blank, never estimated.

Full profiles

GPT-3.5 Turbo (Jan 2024) → · Llama 3.1-8B → · the full AI Model Rankings table