Which is better for coding — DeepSeek-V3.2-Exp or GPT-5.1 Codex High?

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

Which model is cheaper — DeepSeek-V3.2-Exp or GPT-5.1 Codex High?

DeepSeek-V3.2-Exp is cheaper for input: $0.27 per 1M tokens vs $1.25.

Which has a larger context window — DeepSeek-V3.2-Exp or GPT-5.1 Codex High?

GPT-5.1 Codex High supports a larger context: 400,000 tokens vs 163,840.

DeepSeek-V3.2-Exp vs GPT-5.1 Codex High: Specs & Benchmark Comparison

Characteristic	DeepSeek-V3.2-Exp	GPT-5.1 Codex High
Company	DeepSeek	OpenAI
Release Date	September 28, 2025	November 11, 2025
Parameters	685B	—
Multimodal	No	Yes
Context (input)	164K	400K
Context (output)	66K	128K
Input Price / 1M	$0.27	$1.25
Output Price / 1M	$0.41	$10.00
Average Score	0.8	1.0
Benchmarks
AIME 2025	0.9	1.0

Visual Benchmark Comparison

DeepSeek-V3.2-Exp

GPT-5.1 Codex High

AIME 20250.9 vs 1.0

0.9

1.0

Verdict

GPT-5.1 Codex High leads in 2 out of 4 comparison categories.

Overall Performance

Both models show comparable average scores: DeepSeek-V3.2-Exp — 0.8, GPT-5.1 Codex High — 1.0.

API Cost

DeepSeek-V3.2-Exp is 16.5x cheaper: input $0.27/1M vs $1.25/1M tokens.

Context Window

GPT-5.1 Codex High supports a larger context: 400K vs 164K tokens.

Recency

GPT-5.1 Codex High is newer: released 11/11/2025 vs 9/28/2025.

More About These Models

DeepSeek-V3.2-Exp

DeepSeek — specs, benchmarks, API

GPT-5.1 Codex High

OpenAI — specs, benchmarks, API

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All model comparisons →

The DeepSeek-V3.2-Exp and GPT-5.1 Codex High comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V3.2-Exp or GPT-5.1 Codex High page. See also the complete list of AI model comparisons.