GPT-5.3 Codex vs DeepSeek V4 Pro
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
GPT-5.3 Codex
B
DeepSeek V4 Pro
- ProviderOpenAIDeepSeek
- Rank#31#30Higher rank
- TierAA
- Score82.983.0Higher score
- PriceAPI $1.75 input / $14 output per 1M tokensAPI $1.32 input / $3.96 output per 1M tokens at peak hours ($0.66 / $1.98 off-peak); MIT open weightsLower price tier
- TaglineOpenAI's February 2026 agentic coding model combining code generation with general-purpose intelligence, since folded into GPT-5.4 and followed by the GPT-5.5 and GPT-5.6 families.MIT-licensed open-weight heavyweight, among the open-weight leaders on SWE-bench Verified and LiveCodeBench.
| Attribute | GPT-5.3 Codex | DeepSeek V4 Pro |
|---|---|---|
| Provider | OpenAI | DeepSeek |
| Rank | #31 | #30Higher rank |
| Tier | A | A |
| Score | 82.9 | 83.0Higher score |
| Price | API $1.75 input / $14 output per 1M tokens | API $1.32 input / $3.96 output per 1M tokens at peak hours ($0.66 / $1.98 off-peak); MIT open weightsLower price tier |
| Tagline | OpenAI's February 2026 agentic coding model combining code generation with general-purpose intelligence, since folded into GPT-5.4 and followed by the GPT-5.5 and GPT-5.6 families. | MIT-licensed open-weight heavyweight, among the open-weight leaders on SWE-bench Verified and LiveCodeBench. |