How does GPT-5.3 Codex compare with other LLMs?

AskClash compares GPT-5.3 Codex against nearby AI models using public benchmark scores, pricing, context window, and access details.

What benchmarks are tracked for GPT-5.3 Codex?

The page shows cached published benchmark signals such as HLE, GPQA, SWE-bench, SWE-Pro, Terminal-Bench, MCP Atlas, MMMU-Pro, ARC-AGI-2, Tau2, and related model scores when available.

LLM Leaderboard · Proprietary

GPT-5.3 Codex leaderboard — benchmarks, pricing, and comparisons.

Compare GPT-5.3 Codex vs GPT, Claude, Gemini, DeepSeek, open-weight, and frontier AI models using public benchmark scores, token pricing, context window, and access details.

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Rank #29AskClash overall score: 42.7

$1.75 / $14.0Input and output token price, when published. Context: 400K.

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GPT-5.3 Codex benchmark snapshot

AskClash combines public LLM benchmark cells into a weighted percentile score and penalizes missing coverage so narrow rows do not dominate better-measured models.

Overall42.7

Benchmark cells5

Context400K

CreatorOpenAI

GPT-5.3 Codex public benchmark scores

Cached benchmark values can include HLE, GPQA, SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, MCP Atlas, MMMU-Pro, ARC-AGI-2, Tau2, and model-specific coding or agent scores.

RWT

8.0 score

SWE-bench

85.0 score

SWE-Pro

56.8 score

Terminal-Bench

77.3 score

OSWorld

64.7 score

Tau2

86.0 score

GPT-5.3 Codex vs other AI models

Use these comparison links to evaluate GPT-5.3 Codex against nearby LLMs by benchmark score, price, context window, and provider.

Claude Opus 5 vs GPT-5.3 Codex Claude Fable 5 vs GPT-5.3 Codex GPT-5.6 Sol vs GPT-5.3 Codex Kimi K3 vs GPT-5.3 Codex Qwen3.8 Max vs GPT-5.3 Codex Claude Opus 4.8 vs GPT-5.3 Codex GPT-5.5 vs GPT-5.3 Codex GPT-5.6 Terra vs GPT-5.3 Codex

Related AI and tech coverage

Cached AskClash article matches that can provide release, provider, benchmark, pricing, or market context around this model.

Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra)

Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra) Simon Willison’s Weblog Subscribe 7th August 2026 - Link Blog Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra) . On Wednesday I wrote about One-shotting a Raccoon Heist game using C

Last cached leaderboard date: August 10, 2026. This model page is generated from the AskClash LLM Leaderboard cache and linked from the live leaderboard.