Model comparison

GPT-5.3 Codex vs Llama 3.2 1B

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 20.1 on the Noometry Index. Llama 3.2 1B costs 68× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

Last verified October 10, 2026. 1 shared benchmarks.

GPT-5.3 Codex OpenAI

45.8

Rank #69 Reported

Llama 3.2 1B

Summary

They share 1 benchmark with published results for both. GPT-5.3 Codex scores higher in 2 categories and Llama 3.2 1B in 0 categories; 2 gaps are clear of the uncertainty.
The widest gap is in agentic & tool use, where GPT-5.3 Codex leads 48.0 to 14.6.
Llama 3.2 1B is cheaper at $0.027 / $0.20 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
GPT-5.3 Codex accepts more context: 400K tokens versus 60K.
Llama 3.2 1B has downloadable open weights; the other is API-only.

Side by side

GPT-5.3 Codex and Llama 3.2 1B specifications
	GPT-5.3 Codex	Llama 3.2 1B
Provider	OpenAI	Meta
Noometry Index	45.8	20.1
Released	2026-02-05	2024-09-24
Weights	Proprietary	Open
Context window	400K	60K
Max output	128K	54K
Input $ / M tokens	$1.75	$0.027
Output $ / M tokens	$14	$0.20
Results tracked	8	22

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Category by category

Coding GPT-5.3 Codex leads

GPT-5.3 Codex: 48.6 (#56), Llama 3.2 1B: 21.1 (#338)

Coding benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
SWE-bench Verified	74.8%	—
LMArena WebDev	1409	—
WeirdML	79.3%	—
BigCodeBench Instruct	—	8.2%
LMArena Coding	—	1070
BigCodeBench Complete	—	11.3%
ALE-Bench	1,655	—

Agentic & Tool Use GPT-5.3 Codex leads

GPT-5.3 Codex: 48.0 (#9), Llama 3.2 1B: 14.6 (#150)

Agentic & Tool Use benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
Terminal-Bench	78.4%	—
Berkeley Function Calling Leaderboard	—	10.8%
BALROG	—	6.6%
METR Time Horizons	74.5%	—
Vending-Bench 2	5,940	—

Reasoning Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 16.2 (#308)

Reasoning benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
Epoch Capabilities Index	156.77	101.99
Chess Puzzles	—	0%
LMArena Hard Prompts	—	1044

Math Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 10.4 (#313)

Math benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
OTIS Mock AIME 2024-2025	—	0.6%
LMArena Math	—	1086

Knowledge Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 7.2 (#312)

Knowledge benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
GPQA Diamond	—	23.9%
LMArena Expert	—	1007

Multilingual Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 23.8 (#292)

Multilingual benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
LMArena Non-English	—	973
LMArena Chinese	—	959
LMArena German	—	1014
LMArena Russian	—	941

Instruction Following Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 52.4 (#290)

Instruction Following benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
LMArena Instruction Following	—	1031

Long Context Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 31.9 (#274)

Long Context benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
LMArena Longer Query	—	1050

Writing & Preference Not comparable

GPT-5.3 Codex: —, Llama 3.2 1B: 21.3 (#310)

Writing & Preference benchmarks
Benchmark	GPT-5.3 Codex	Llama 3.2 1B
LMArena Text	—	1055
LMArena Creative Writing	—	1033
EQ-Bench Creative Writing	—	200
LMArena Multi-Turn	—	1030

Frequently asked questions

Is GPT-5.3 Codex better than Llama 3.2 1B?

Which is cheaper, GPT-5.3 Codex or Llama 3.2 1B?

Llama 3.2 1B is cheaper. It lists at $0.027 per million input tokens and $0.20 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

Is GPT-5.3 Codex or Llama 3.2 1B better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 21.1 in the Noometry coding category.

Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 60K.

How many benchmarks do GPT-5.3 Codex and Llama 3.2 1B share?

1 benchmark has published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Llama 3.2 1B has 22.