Which is better for coding — GPT-5.2 or GPT-5.3 Codex?

Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.

Which model is cheaper — GPT-5.2 or GPT-5.3 Codex?

GPT-5.2 is cheaper for input: $1.50 per 1M tokens vs $1.75.

Which has a larger context window — GPT-5.2 or GPT-5.3 Codex?

GPT-5.3 Codex supports a larger context: 400,000 tokens vs 256,000.

GPT-5.2 vs GPT-5.3 Codex: Specs & Benchmark Comparison

Characteristic	GPT-5.2	GPT-5.3 Codex
Company	OpenAI	OpenAI
Release Date	December 10, 2025	February 5, 2026
Parameters	—	—
Multimodal	Yes	Yes
Context (input)	256K	400K
Context (output)	128K	128K
Input Price / 1M	$1.50	$1.75
Output Price / 1M	$6.00	$14.00
Average Score	1.0	0.7

Verdict

GPT-5.3 Codex leads in 2 out of 4 comparison categories.

Overall Performance

Both models show comparable average scores: GPT-5.2 — 1.0, GPT-5.3 Codex — 0.7.

API Cost

GPT-5.2 is 2.1x cheaper: input $1.50/1M vs $1.75/1M tokens.

Context Window

GPT-5.3 Codex supports a larger context: 400K vs 256K tokens.

Recency

GPT-5.3 Codex is newer: released 2/5/2026 vs 12/10/2025.

More About These Models

GPT-5.2

OpenAI — specs, benchmarks, API

GPT-5.3 Codex

OpenAI — specs, benchmarks, API

Related Comparisons

GPT-5.1 Medium vs GPT-5.2 GPT-5.1 Codex High vs GPT-5.2 GPT-5.1 High vs GPT-5.2 GPT-5.2 vs GPT-5.4 GPT-5 High vs GPT-5.2 GPT-5.1 Thinking vs GPT-5.2

All model comparisons →

The GPT-5.2 and GPT-5.3 Codex comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.2 or GPT-5.3 Codex page. See also the complete list of AI model comparisons.