GPT-5.5 vs Mistral OCR 4
Pricing, benchmarks, and use case comparison
Quick take
- •GPT-5.5 is meaningfully stronger at coding (93 vs 5 on our capability index).
- •Mistral OCR 4 is meaningfully stronger at cost efficiency (96 vs 58).
- •GPT-5.5 is 100% cheaper on input tokens, which compounds fast on high-volume or agentic workloads.
Specs comparison
| GPT-5.5 | Mistral OCR 4 | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Type | Closed source | Closed source |
| Context window | ✓1,050,000 tokens (128,000 max output) | Not announced |
| Input / 1M tokens | ✓$5.00 | 4000 |
| Output / 1M tokens | $30.00 | 4000 |
| Release date | 2026-04 | 2026-06 |
Benchmarks
| Benchmark | GPT-5.5 | Mistral OCR 4 |
|---|---|---|
| SWE-bench Verified | 82.6% | - |
| SWE-bench Pro | 58.6% | - |
| OlmOCRBench | - | 85.20 |
| OmniDocBench | - | 93.07 |
| Human preference (head-to-head) | - | 72% win rate |
| Human evaluation (blind) | - | 72% |
| Human Evaluation (Blind Test) | - | 72% win rate |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose GPT-5.5 if...
- →Complex professional coding, data analysis, and multi-tool agentic workflows
- →Long-document or large-codebase tasks needing a 1M+ context window
- →You want OpenAI's recommended default frontier model for new projects
Choose Mistral OCR 4 if...
- →You need to convert PDFs, scans, or office docs into structured text/Markdown
- →You require high-accuracy multilingual document parsing at low cost
- →You need tables, equations, and layout preserved with confidence scores
- →You must keep documents in-house (self-hosted deployment)