o3 vs Voxtral Small
Pricing verdict: o3 vs Voxtral Small: Voxtral Small is cheaper for input-heavy usage ($0.10/M vs $2.00/M input tokens), while o3 is better for long-context tasks (1,000,000 tokens).
Direct answer: choose Voxtral Small for lower token spend and choose o3 when your workload needs longer context.
Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
o3
Voxtral Small
Cost Differences
Voxtral Small costs less than o3
Quick Recommendation
Winner for direct API pricing: Voxtral Small. At the default workload, Voxtral Small saves about $17.10/month ($208.05/year) versus o3.
Feature Comparison
| Feature | o3 | Voxtral Small |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Input Price | $2.00/1M tokens | $0.10/1M tokens |
| Output Price | $8.00/1M tokens | $0.40/1M tokens |
| Context Window | 1,000,000 tokens | 32,000 tokens |
| Max Output | 131,072 tokens | 8,192 tokens |
| Category | reasoning | efficient |
| Capabilities | textreasoningvisioncode | textaudiotranscription |
| Release Date | 4/16/2025 | 7/15/2026 |
o3 vs Voxtral Small: Which Should You Choose?
Choosing between o3 and Voxtral Small depends on your priorities: cost efficiency, context length, or raw capability. Voxtral Small is the more affordable option at $0.10/1M input tokens — 95% cheaper than o3. Meanwhile, o3 offers a significantly larger context window at 1,000,000 tokens vs 32,000 for Voxtral Small.
These models come from different providers — OpenAI and Mistral AI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with OpenAI, switching to Mistral AIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
These models target different tiers: o3 is a reasoning model while Voxtral Small is efficient. This means they're optimized for different workloads. o3 is built for complex tasks that require deeper reasoning, while Voxtral Small offers better value for routine operations.
Output costs matter too. o3 charges $8.00/1M output tokens vs $0.40 for Voxtral Small. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Voxtral Small has the edge here at $0.40/1M output tokens.
Multimodal capabilities: o3 supports vision (image inputs) while Voxtral Small is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose o3 when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (reasoning, vision, code)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using OpenAI's API ecosystem
Choose Voxtral Small when:
- • Budget is a primary concern
- • You're already using Mistral AI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Pros and Caveats at a Glance
o3
- • Input pricing: $2.00/M tokens
- • Output pricing: $8.00/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Higher input cost than Voxtral Small
- • Higher output cost than Voxtral Small
Voxtral Small
- • Input pricing: $0.10/M tokens
- • Output pricing: $0.40/M tokens
- • Context window: 32,000 tokens
- • Max output: 8,192 tokens
Watch out for
- • Smaller context window than o3
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
o3 (OpenAI)
Voxtral Small (Mistral AI)
Start using o3 today
Sign Up for OpenAI →Start using Voxtral Small today
Sign Up for Mistral AI →Frequently Asked Questions
Which is cheaper, o3 or Voxtral Small?▼
What is the context window difference between o3 and Voxtral Small?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare OpenAI and Mistral AI API pricing beyond this model matchup?▼
Related Comparisons
Related Articles
Learn when to pick each model, then compare live pricing scenarios.