Magistral Small vs o4-mini
Magistral Small vs o4-mini: Magistral Small is cheaper for input-heavy usage ($0.50/M vs $1.10/M input tokens), while o4-mini is better for long-context tasks (2,000,000 tokens).
Direct answer: choose Magistral Small for lower token spend and choose o4-mini when your workload needs longer context.
Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Magistral Small
o4-mini
Cost Differences
o4-mini costs more than Magistral Small
Quick Recommendation
Winner for direct API pricing: Magistral Small. At the default workload, Magistral Small saves about $6.15/month ($74.825/year) versus o4-mini.
Feature Comparison
| Feature | Magistral Small | o4-mini |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Input Price | $0.50/1M tokens | $1.10/1M tokens |
| Output Price | $1.50/1M tokens | $4.40/1M tokens |
| Context Window | 128,000 tokens | 2,000,000 tokens |
| Max Output | 16,384 tokens | 131,072 tokens |
| Category | reasoning | reasoning |
| Capabilities | textreasoning | textreasoningcode |
| Release Date | 12/15/2025 | 4/16/2025 |
Magistral Small vs o4-mini: Which Should You Choose?
Choosing between Magistral Small and o4-mini depends on your priorities: cost efficiency, context length, or raw capability. Magistral Small is the more affordable option at $0.50/1M input tokens — 55% cheaper than o4-mini. Meanwhile, o4-mini offers a significantly larger context window at 2,000,000 tokens vs 128,000 for Magistral Small.
These models come from different providers — Mistral AI and OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Mistral AI, switching to OpenAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the reasoning category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Magistral Small would save you roughly $615.00/month compared to o4-mini. For startups and indie developers, that difference can be significant.
Output costs matter too. Magistral Small charges $1.50/1M output tokens vs $4.40 for o4-mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Magistral Small has the edge here at $1.50/1M output tokens.
Best Use Cases
Choose Magistral Small when:
- • Budget is a primary concern
- • You're already using Mistral AI's API ecosystem
Choose o4-mini when:
- • You need a larger context window (2,000,000 tokens)
- • You need more capabilities (code)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using OpenAI's API ecosystem
Pros and Caveats at a Glance
Magistral Small
- • Input pricing: $0.50/M tokens
- • Output pricing: $1.50/M tokens
- • Context window: 128,000 tokens
- • Max output: 16,384 tokens
Watch out for
- • Smaller context window than o4-mini
o4-mini
- • Input pricing: $1.10/M tokens
- • Output pricing: $4.40/M tokens
- • Context window: 2,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Higher input cost than Magistral Small
- • Higher output cost than Magistral Small
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Magistral Small (Mistral AI)
o4-mini (OpenAI)
Start using Magistral Small today
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Sign Up for OpenAI →Frequently Asked Questions
Which is cheaper, Magistral Small or o4-mini?▼
What is the context window difference between Magistral Small and o4-mini?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare Mistral AI and OpenAI API pricing beyond this model matchup?▼
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