GPT-5.3 Chat vs Mistral Small 4
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-5.3 Chat and Mistral Small 4.
GPT-5.3 Chat
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
Mistral Small 4
Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from...
Technical Specifications
| Specification | GPT-5.3 Chat | Mistral Small 4 |
|---|---|---|
| Provider | OpenAI | Mistral |
| Context Window | 128,000 tokens | 262,144 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2026-03-03 | 2026-03-16 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5.3 Chat
$1.75
Mistral Small 4
$0.15
Output Price per Million Tokens
GPT-5.3 Chat
$14.00
Mistral Small 4
$0.60
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GPT-5.3 Chat Quirks & Gotchas
No developer gotchas reported.
Mistral Small 4 Quirks & Gotchas
No developer gotchas reported.