Claude 3.5 Sonnet vs o4-mini Deep Research
Claude 3.5 Sonnet vs o4-mini Deep Research: o4-mini Deep Research is cheaper for input-heavy usage ($2.00/M vs $3.00/M input tokens), while Claude 3.5 Sonnet is better for long-context tasks (200,000 tokens).
Direct answer: choose o4-mini Deep Research for lower token spend and choose Claude 3.5 Sonnet 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)
Claude 3.5 Sonnet
o4-mini Deep Research
Cost Differences
o4-mini Deep Research costs less than Claude 3.5 Sonnet
Quick Recommendation
Winner for direct API pricing: o4-mini Deep Research. At the default workload, o4-mini Deep Research saves about $13.50/month ($164.25/year) versus Claude 3.5 Sonnet.
Feature Comparison
| Feature | Claude 3.5 Sonnet | o4-mini Deep Research |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price | $3.00/1M tokens | $2.00/1M tokens |
| Output Price | $15.00/1M tokens | $8.00/1M tokens |
| Context Window | 200,000 tokens | 200,000 tokens |
| Max Output | 8,192 tokens | 32,768 tokens |
| Category | balanced | reasoning |
| Capabilities | textvisioncode | textreasoningcode |
| Release Date | 10/22/2024 | 6/26/2025 |
Claude 3.5 Sonnet vs o4-mini Deep Research: Which Should You Choose?
Choosing between Claude 3.5 Sonnet and o4-mini Deep Research depends on your priorities: cost efficiency, context length, or raw capability. o4-mini Deep Research is the more affordable option at $2.00/1M input tokens — 33% cheaper than Claude 3.5 Sonnet.
These models come from different providers — Anthropic and OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to OpenAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
These models target different tiers: Claude 3.5 Sonnet is a balanced model while o4-mini Deep Research is reasoning. This means they're optimized for different workloads. o4-mini Deep Research targets more demanding workloads, while Claude 3.5 Sonnet provides a cost-effective option for everyday tasks.
Output costs matter too. Claude 3.5 Sonnet charges $15.00/1M output tokens vs $8.00 for o4-mini Deep Research. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o4-mini Deep Research has the edge here at $8.00/1M output tokens.
Multimodal capabilities: Claude 3.5 Sonnet supports vision (image inputs) while o4-mini Deep Research is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose Claude 3.5 Sonnet when:
- • You're already using Anthropic's API ecosystem
Choose o4-mini Deep Research when:
- • Budget is a primary concern
- • You need longer outputs (up to 32,768 tokens)
- • You're already using OpenAI's API ecosystem
Pros and Caveats at a Glance
Claude 3.5 Sonnet
- • Input pricing: $3.00/M tokens
- • Output pricing: $15.00/M tokens
- • Context window: 200,000 tokens
- • Max output: 8,192 tokens
Watch out for
- • Higher input cost than o4-mini Deep Research
- • Higher output cost than o4-mini Deep Research
o4-mini Deep Research
- • Input pricing: $2.00/M tokens
- • Output pricing: $8.00/M tokens
- • Context window: 200,000 tokens
- • Max output: 32,768 tokens
Watch out for
- • Trade-offs are minor in this matchup.
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude 3.5 Sonnet (Anthropic)
o4-mini Deep Research (OpenAI)
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Which is cheaper, Claude 3.5 Sonnet or o4-mini Deep Research?▼
What is the context window difference between Claude 3.5 Sonnet and o4-mini Deep Research?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare Anthropic and OpenAI API pricing beyond this model matchup?▼
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