GPT-6 Luna vs Mistral Medium 3.5 pricing
- For the Chatbot workload, GPT-6 Luna costs 15× less than Mistral Medium 3.5.
- For the RAG workload, GPT-6 Luna costs 15× less than Mistral Medium 3.5.
- For the Coding agent workload, GPT-6 Luna costs 15× less than Mistral Medium 3.5.
Prices
| USD per 1M tokens | GPT-6 Luna | Mistral Medium 3.5 |
|---|---|---|
| Input | $0.10 | $1.50 |
| Output | $0.50 | $7.50 |
| Cache read | $0.01 | $0.15 |
| Cache write | $0.125 | Not published |
| Batch input | $0.05 | Not published |
| Batch output | $0.25 | Not published |
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Mistral's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation
Monthly cost by workload
| Workload | GPT-6 Luna | Mistral Medium 3.5 |
|---|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $105.00/mo | $1,575/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $157.50/mo | $2,363/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $72.00/mo | $1,080/mo |
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Context and capabilities
| GPT-6 Luna | Mistral Medium 3.5 | |
|---|---|---|
| Context | 1,050,000 tokens | 262,144 tokens |
| Max output | 128,000 tokens | 262,144 tokens |
| Input | text, image, pdf | text, image |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
Questions
- What is the price difference between GPT-6 Luna and Mistral Medium 3.5?
- GPT-6 Luna: $0.10 per 1M input tokens and $0.50 per 1M output tokens. Mistral Medium 3.5: $1.50 per 1M input tokens and $7.50 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $105.00 per month for GPT-6 Luna and $1,575 for Mistral Medium 3.5.
- Which has the longer context window, GPT-6 Luna or Mistral Medium 3.5?
- GPT-6 Luna has the longer context window: up to 1,050,000 tokens, compared with 262,144 for Mistral Medium 3.5.
- Do GPT-6 Luna and Mistral Medium 3.5 have prompt caching and batch prices?
- GPT-6 Luna: cached input $0.01 per 1M tokens; batch $0.05 per 1M input tokens and $0.25 per 1M output tokens. Mistral Medium 3.5: cached input $0.15 per 1M tokens; no batch price published.