o3 Deep Research vs Voxtral Small

Pricing verdict: o3 Deep Research vs Voxtral Small: Voxtral Small is cheaper for input-heavy usage ($0.10/M vs $10.00/M input tokens), while o3 Deep Research is better for long-context tasks (200,000 tokens).

Direct answer: choose Voxtral Small for lower token spend and choose o3 Deep Research 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.

OpenAI

o3 Deep Research

Mistral AI

Voxtral Small

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o3 Deep Research pricing page Voxtral Small pricing page OpenAI provider overview Mistral AI provider overview

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

o3 Deep Research

Per Request:$0.03

Daily:$3.00

Monthly:$90.00

Yearly:$1,095.00

Voxtral Small

Per Request:$0.000300

Daily:$0.03

Monthly:$0.90

Yearly:$10.95

Cost Differences

$0.0297

Per Request

$2.97

Daily

$89.10

Monthly

$1,084.05

Yearly

Voxtral Small costs less than o3 Deep Research

Quick Recommendation

Winner for direct API pricing: Voxtral Small. At the default workload, Voxtral Small saves about $89.10/month ($1,084.05/year) versus o3 Deep Research.

o3 Deep Research full pricing breakdown Voxtral Small full pricing breakdown OpenAI API pricing details Mistral AI API pricing details OpenAI vs Mistral AI API pricing Codex Mini vs o4-mini Deep Research Codex Mini vs o3 Deep Research

Feature Comparison

Feature	o3 Deep Research	Voxtral Small
Provider	OpenAI	Mistral AI
Input Price	$10.00/1M tokens	$0.10/1M tokens
Output Price	$40.00/1M tokens	$0.40/1M tokens
Context Window	200,000 tokens	32,000 tokens
Max Output	32,768 tokens	8,192 tokens
Category	reasoning	efficient
Capabilities	textreasoningvisioncode	textaudiotranscription
Release Date	6/26/2025	7/15/2026

o3 Deep Research vs Voxtral Small: Which Should You Choose?

Choosing between o3 Deep Research 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 — 99% cheaper than o3 Deep Research. Meanwhile, o3 Deep Research offers a significantly larger context window at 200,000 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 Deep Research is a reasoning model while Voxtral Small is efficient. This means they're optimized for different workloads. o3 Deep Research is built for complex tasks that require deeper reasoning, while Voxtral Small offers better value for routine operations.

Output costs matter too. o3 Deep Research charges $40.00/1M 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 Deep Research 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 Deep Research when:

• You need a larger context window (200,000 tokens)
• You need more capabilities (reasoning, vision, code)
• You need longer outputs (up to 32,768 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 Deep Research

• Input pricing: $10.00/M tokens
• Output pricing: $40.00/M tokens
• Context window: 200,000 tokens
• Max output: 32,768 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 Deep Research

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

o3 Deep Research (OpenAI)

Cost Calculator

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Voxtral Small (Mistral AI)

Cost Calculator

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Frequently Asked Questions

Which is cheaper, o3 Deep Research or Voxtral Small?▼

Voxtral Small is cheaper for input tokens at $0.10 per million tokens vs $10.00 for o3 Deep Research — that's 99% savings on input costs.

What is the context window difference between o3 Deep Research and Voxtral Small?▼

o3 Deep Research supports 200,000 tokens while Voxtral Small supports 32,000 tokens — a difference of 168,000 tokens in favor of o3 Deep Research.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, Voxtral Small is the lower-cost option, while o3 Deep Research offers a larger context window (200,000 vs 32,000 tokens). Choose Voxtral Small for budget sensitivity or o3 Deep Research for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, o3 Deep Research costs about $90.00/month and Voxtral Small costs about $0.90/month. Overall, Voxtral Small has lower combined input + output rates ($0.10 in, $0.40 out) vs o3 Deep Research.

Where can I compare OpenAI and Mistral AI API pricing beyond this model matchup?▼

See the OpenAI vs Mistral AI provider comparison page for lineup-level averages, then review each model page for exact per-token rates.