GPT-6 Luna vs Ministral 3 3B
Price and specs side by side · USD per 1M tokens · verified 2026-10-11
// side by side
| metric | GPT-6 Luna | Ministral 3 3B |
|---|
| input / 1M | $0.10 | $0.10 |
| output / 1M | $0.50 | $0.10 |
| blended (3:1) | $0.20 | $0.10 |
| cache read / 1M | $0.01 | $0.01 |
| context | 1.05M | 131.1K |
| max output | 128K | 262.1K |
| input types | text · image · pdf | text · image |
| reasoning | yes | no |
| tool calling | yes | yes |
| structured output | yes | yes |
| open weights | no | yes |
| released | 2026-09-22 | 2025-12-02 |
| knowledge cutoff | 2026-05-18 | n/a |
| lab | OpenAI | Mistral |
// monthly cost scenarios
| workload | tokens in / out | GPT-6 Luna | Ministral 3 3B |
|---|
| Chatbot | 10M / 2M | $2.00 | $1.20 |
| RAG app | 50M / 5M | $7.50 | $5.50 |
| Coding agent | 20M / 10M | $7.00 | $3.00 |
// verdict
- Ministral 3 3B is 50% cheaper than GPT-6 Luna on a blended 3:1 input/output basis.
- GPT-6 Luna has the larger context window (1.05M vs 131.1K tokens).
- Only GPT-6 Luna supports built-in reasoning.