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How smart is GPT-3.5 Turbo (Jan 2024)?

47 SI-IQ · 90% interval 42–53
Not ranked: results from fewer than 2 evaluators

GPT-3.5 Turbo (Jan 2024) is a model from OpenAI, released on Jan 25, 2024. Its SI-IQ is 47 (90% interval 42–53), estimated from 5 benchmark results by 1 evaluator.

Data as of Oct 18, 2026 · method 1.0.0

A model is ranked when its results come from at least 5 benchmarks (the two GPQA Diamond runs count as one) in at least 3 areas, from at least 2 different evaluators, and its versions are released no more than 60 days apart. This model does not meet that yet (results from fewer than 2 evaluators). Its provisional estimate rests on 5 benchmark results and can change a lot when more results arrive.

Facts

Developer: OpenAI
Released: Jan 25, 2024
Access: API access
Benchmarks used: 5 benchmark results from 1 evaluator
API price: $0.50 input / $1.50 output per 1M tokens (developer's price list, Oct 18, 2026)
Context window: 16,385 tokens

Ability by area (SI-IQ, 90% interval)

Every benchmark result we used

Each score is one value exactly as the source published it: for Epoch AI the best of its run settings, for OpenRouter the median hosting provider (the developer's own hosting when it ran the test). “Implied SI-IQ” is the ability that this single result points to; the overall SI-IQ is their precision-weighted average.

Benchmark	Area	Score	Implied SI-IQ	Evaluated by	As listed by the source	Retrieved	Source
Mystery Game Puzzles	Reasoning	3.0%	70	Epoch AI	`gpt-3.5-turbo-0125`	Oct 18, 2026	Epoch AI Benchmarking Hub · data file
FrontierMath Tiers 1–3	Math	0.0%	56	Epoch AI	`gpt-3.5-turbo-0125`	Oct 18, 2026	Epoch AI Benchmarking Hub · data file
MATH Level 5	Math	11.6%	45	Epoch AI	`gpt-3.5-turbo-0125`	Oct 18, 2026	Epoch AI Benchmarking Hub · data file
OTIS Mock AIME 2024–2025	Math	2.2%	56	Epoch AI	`gpt-3.5-turbo-0125`	Oct 18, 2026	Epoch AI Benchmarking Hub · data file
GPQA Diamond	Knowledge	27.2%	18	Epoch AI	`gpt-3.5-turbo-0125`	Oct 18, 2026	Epoch AI Benchmarking Hub · data file

Human preference (Arena)

On the Arena leaderboard, where people vote between two anonymous answers, GPT-3.5 Turbo (Jan 2024) has a rating of 1,226 (1,221–1,230) from 66,207 votes (published Oct 15, 2026). Human preference is a different measure from benchmark ability and is not part of SI-IQ. Arena (Hugging Face)

Computed with SI-IQ method version 1.0.0. Read the full methodology

Data sources: Arena leaderboard dataset on Hugging Face (CC BY 4.0); Epoch AI, ‘Capabilities & benchmarking’ (CC BY 4.0); LiteLLM, model_prices_and_context_window.json (MIT) (licences and changes).