GPT-5.3-Codex alternatives
Best GPT-5.3-Codex alternatives
10 models that can stand in for GPT-5.3-Codex, ranked by benchmark score, with what each one does better.
Current Model
GPT-5.3-Codex
- Input / 1M
- $1.75
- Output / 1M
- $14
- Context
- 400K
- Intelligence
- 32.5
Quick picks
The best alternative depends on what you need
Why people switch away from GPT-5.3-Codex, and the model that fits each reason best.
Ranked
Top GPT-5.3-Codex alternatives
Each model is scored against GPT-5.3-Codex. Green means better, red means worse.
| Model | Input / 1M | Output / 1M | Context | Intelligence | Compare |
|---|---|---|---|---|---|
GPT-5.3-Codex OpenAI | Input / 1M$1.75 | Output / 1M$14 | Context400K | Intelligence32.5 | Reference model |
| Input / 1M$2.50+43% | Output / 1M$15+7% | Context1.05M+163% | Intelligence39+20% | Compare | |
Why switch:Higher intelligence scoreLarger 1.05M contextNewer release | |||||
| Input / 1M$5+186% | Output / 1M$30+114% | Context1.05M+163% | Intelligence38.4+18% | Compare | |
Why switch:Higher intelligence scoreLarger 1.05M contextNewer release | |||||
| Input / 1M$2+14% | Output / 1M$10-29% | Context1M+150% | Intelligence38.2+18% | Compare | |
Why switch:1.4x cheaper outputHigher intelligence scoreLarger 1M contextNewer release | |||||
| Input / 1M$0.06-97% | Output / 1M$8-43% | Context1.05M+162% | Intelligence33.7+4% | Compare | |
Why switch:1.8x cheaper outputHigher intelligence scoreLarger 1.05M contextNewer release | |||||
| Input / 1M$1.50-14% | Output / 1M$9-36% | Context1.05M+162% | Intelligence33.6+3% | Compare | |
Why switch:1.6x cheaper outputHigher intelligence scoreLarger 1.05M contextAccepts video and audioNewer release | |||||
| Input / 1M$5+186% | Output / 1M$25+79% | Context1M+150% | Intelligence31.9-2% | Compare | |
Why switch:Larger 1M context | |||||
| Input / 1M$1.75 | Output / 1M$14 | Context400K | Intelligence30.4-6% | Compare | |
| Input / 1M$3+71% | Output / 1M$15+7% | Context1M+150% | Intelligence30.1-7% | Compare | |
Why switch:Larger 1M context | |||||
| Input / 1M$2+14% | Output / 1M$12-14% | Context1.05M+162% | Intelligence29.7-9% | Compare | |
Why switch:1.2x cheaper outputLarger 1.05M contextAccepts audio and video | |||||
| Input / 1M$1.75 | Output / 1M$14 | Context400K | Intelligence28.5-12% | Compare | |
FAQ
Frequently asked questions
What is the best alternative to GPT-5.3-Codex?
GPT-5.4 from OpenAI ranks first, based on independent benchmark scores. It costs $15 per 1M output tokens, compared with $14 for GPT-5.3-Codex.
Is there a cheaper alternative to GPT-5.3-Codex?
Yes. GLM 5.2 charges $8 per 1M output tokens, versus $14 for GPT-5.3-Codex.
Can I try GPT-5.3-Codex and its alternatives at the same time?
Yes. Shortcut Chat sends one prompt to several models at once, so you can compare GPT-5.3-Codex with any of these alternatives on your own tasks.
Not sure which to pick? Try them all.
Send one prompt to GPT-5.3-Codex and its alternatives at the same time, and keep the answer you like best.