GPT-5.3 Codex (xhigh)
OpenAIGPTProprietary
Description
GPT-5.3-Codex is OpenAI's most capable coding model, combining frontier agentic coding capabilities, improvements in aesthetics, and context compaction. It sets new state-of-the-art results on Terminal-Bench 2.0 (77.3%), OSWorld-Verified (64.7%), and SWE-Lancer IC Diamond (81.4%). First model classified as High capability for cybersecurity under OpenAI's Preparedness Framework. Available in the Codex app and API.
Release Date
2026-02-05
Parameters
—
Context Length
400K
Modalities
image, pdf, text
Capability Radar
45
general
53
coding
92
reasoning
68
science
80
agents
85
multimodal
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Agentic Capability | 49 | 52.0 | LS |
| Code Ranking | 39 | 87.0 | AA |
| General Ranking | 44 | 80.0 | AA |
| Science | 25 | 87.0 | AA |
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))Agents
Terminal-Bench 2.0Stanford × Laude Institute (2026)
77.3%SR
OSWorld-Verified
64.7%SR
SWE-Bench ProPrinceton NLP (2024)
56.8%SR
Code
SWE-Lancer (IC-Diamond subset)
81.4%SR
General
LiveBench
72.8%
Safety
Cybersecurity CTFs
77.6%SR
AA Evaluation Indices
(Artificial Analysis)Intelligence Index(Artificial Analysis)45.5
Gpqa(NYU + Cohere + Anthropic (2023))0.9
Tau2(Sierra + U Toronto + Vector Institute (2025))0.9
Lcr(Artificial Analysis)0.8
Ifbench(Google Research (2023))0.8
Scicode(UIUC + Argonne National Lab (2024))0.5
Terminalbench Hard(Stanford × Laude Institute (2026))0.5
Hle(Center for AI Safety + Scale AI (2025))0.4
LLM Stats Category Scores
(LLM Stats (zeroeval))Safety80
Tool Calling80
Math70
Reasoning70
General70
Agents70
Code70
Multimodal60
Vision60
Pricing
Input Price$1.75 / 1M tokens
Output Price$14 / 1M tokens
Blended Price (3:1)$4.813 / 1M tokens
Cache Read Price$0.175 / 1M tokens
Speed
Tokens/sec112.1
Time to First Token49.98s
Time to Answer49.98s
Provider Price Ranking
Provider Price Ranking
23 providers
Cheapest: OpenAIMost Expensive: Impossibl
ProviderInputOutput
1OpenAICheapest
$0
$0.00001
2Poe
$1.6
$13
3NanoGPT
$1.75
$14
4Abacus
$1.75
$14
5OpenRouter
$1.75
$14
6ZenMux
$1.75
$14
7Vivgrid
$1.75
$14
8Kilo Gateway
$1.75
$14
9Cloudflare AI Gateway
$1.75
$14
10GitHub Copilot
$1.75
$14
11OpenCode Zen
$1.75
$14
12FrogBot
$1.75
$14
13AIHubMix
$1.75
$14
14Azure Cognitive Services
$1.75
$14
15Vercel AI Gateway
$1.75
$14
16LLM Gateway
$1.75
$14
17Azure
$1.75
$14
18FastRouter
$1.75
$14
19OrcaRouter
$1.75
$14
20FreeModel
$1.75
$14
21Neon
$1.75
$14
22Pioneer
$1.75
$14
23Impossibl
$1.75
$14
Compare pricing across different API providers for this model.