OpenAI: GPT Mini Latest vs OpenAI: GPT-5.3-Codex
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT Mini Latest | OpenAI: GPT-5.3-Codex | |
|---|---|---|
| Vendor | ~openai | openai |
| Quality Score | 100 | 100 |
| Benchmark Score | - | 73.4 |
| Input Price | $0.75/M | $1.75/M |
| Output Price | $4.50/M | $14.00/M |
| Context Window | 400,000 | 400,000 |
| Max Output | 128,000 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | - | 73.0 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GPT Mini Latest costs $1.88 and GPT-5.3-Codex costs $5.25, so GPT Mini Latest is about 2.8 times cheaper for the same work.
Both read up to 400,000 tokens at once, roughly 600 pages of text.
Across the 20 tasks where they differ, GPT Mini Latest scores higher on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others), GPT-5.3-Codex on 16 (SQL Generation, Code Review, Code Refactoring and others).
GPT Mini Latest was released in April 2026 and GPT-5.3-Codex in February 2026.
Pick GPT Mini Latest if you need lower cost; pick GPT-5.3-Codex if you need the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | OpenAI: GPT Mini Latest | OpenAI: GPT-5.3-Codex |
|---|---|---|
| SQL Generation | 133 | 141 |
| Code Review | 132 | 145 |
| Code Completion | 130 | 118 |
| Code Refactoring | 136 | 147 |
| Bug Fixing | 136 | 149 |
| Unit Test Generation | 124 | 132 |
| Code Documentation | 130 | 135 |
| Regex Writing | 119 | 124 |
| CI/CD Pipelines | 120 | 128 |
| Frontend Component Design | 122 | 130 |
| Data Analysis | 124 | 134 |
| CSV / Spreadsheet Cleanup | 133 | 135 |
| ETL Scripting | 128 | 138 |
| JSON Extraction | 130 | 120 |
| Bulk Data Labeling | 128 | 117 |
| OCR / Document Parsing | 131 | 134 |
| Table Extraction from PDFs | 131 | 134 |
| Long-Document Summarization | 137 | 148 |
| Short-Form Summarization | 123 | 116 |
| Blog Post Writing | 121 | 129 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →