Mistral Medium 3.1 is $0.4 cheaper per 1M input tokens (50% lower; 2x difference).
API cost decision in 10 seconds
Aion-2.0 vs Mistral Medium 3.1
Pick Mistral Medium 3.1 when budget is the priority.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Mistral Medium 3.1 when budget is the priority.
On the standard 1M input plus 500K output workload, Mistral Medium 3.1 is estimated at $1.4 vs $1.6 for Aion-2.0, saving $0.2 (12.5% lower).
Cost-first pickMistral Medium 3.1
Context-first pickBoth models
Sample savings$0.212.5%
10x traffic gap$2
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $2. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Mistral Medium 3.1, balanced workload favors Mistral Medium 3.1, and output-heavy chatbot favors Aion-2.0.
| Workload shape | Token mix | Better pick | Aion-2.0 | Mistral Medium 3.1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Mistral Medium 3.1 | $4.8 | $3 |
| Balanced workload | 1M input + 1M output | Mistral Medium 3.1 | $2.4 | $2.4 |
| Output-heavy chatbot | 1M input + 5M output | Aion-2.0 | $8.8 | $10.4 |
Aion-2.0 is $0.4 cheaper per 1M output tokens (20% lower; 1.25x difference).
Both models report the same context window at 131.07K tokens.
Mistral Medium 3.1 is $0.2 cheaper on the standard workload (12.5% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Mistral Medium 3.1 has the lower input price; Aion-2.0 has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Mistral Medium 3.1 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.6 for Aion-2.0 and $1.4 for Mistral Medium 3.1.
Choose Aion-2.0 when you care most about lower output-token price.
Choose Mistral Medium 3.1 when you care most about lower input-token price.
- On the standard 1M input plus 500K output workload, Mistral Medium 3.1 is estimated at $1.4 vs $1.6 for Aion-2.0, saving $0.2 (12.5% lower).
- Mistral Medium 3.1 is $0.2 cheaper on the standard workload (12.5% lower).
- Mistral Medium 3.1 is $0.4 cheaper per 1M input tokens (50% lower; 2x difference).
- Aion-2.0 is $0.4 cheaper per 1M output tokens (20% lower; 1.25x difference).
- Both models report the same context window at 131.07K tokens.
| Feature | Aion-2.0 (AionLabs) | Mistral Medium 3.1 (Mistral) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.8 | $0.4 |
| Completion Price per 1M tokens | $1.6 | $2 |
| Sample Workload Cost 1M input + 500K output | $1.6 | $1.4 |
| Context Window | 131.07K | 131.07K |
| Release Date | ||
| Popularity | #116 | #147 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Mistral Medium 3.1 | On the standard 1M input plus 500K output workload, Mistral Medium 3.1 is estimated at $1.4 vs $1.6 for Aion-2.0, saving $0.2 (12.5% lower). |
| High-volume input processing | Mistral Medium 3.1 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Aion-2.0 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Aion-1.0-Mini can replace Aion-2.0 when lower sample workload cost matters most: $1.4.
- Mistral Nemo can replace Mistral Medium 3.1 when lower sample workload cost matters most: $0.04.
- Mistral Small 3 can replace Mistral Medium 3.1 when lower sample workload cost matters most: $0.09.
- Ministral 3 3B 2512 can replace Mistral Medium 3.1 when lower sample workload cost matters most: $0.15.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- DeepSeek V4 Pro offers 1.05M context with $0.87 sample workload cost.
- Hy3 preview · Tencent · #1
- DeepSeek V4 Flash · DeepSeek · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
Cheaper alternatives
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