Claude 3.5 Sonnet vs Codex Mini
Compare Anthropic and OpenAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude 3.5 Sonnet
Codex Mini
Cost Differences
Codex Mini costs less than Claude 3.5 Sonnet
Feature Comparison
| Feature | Claude 3.5 Sonnet | Codex Mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price | $3.00/1M tokens | $1.50/1M tokens |
| Output Price | $15.00/1M tokens | $6.00/1M tokens |
| Context Window | 200,000 tokens | 200,000 tokens |
| Max Output | 8,192 tokens | 32,768 tokens |
| Category | balanced | efficient |
| Capabilities | textvisioncode | textcodereasoning |
| Release Date | 10/22/2024 | 2/2/2026 |
Claude 3.5 Sonnet vs Codex Mini: Which Should You Choose?
Choosing between Claude 3.5 Sonnet and Codex Mini depends on your priorities: cost efficiency, context length, or raw capability. Codex Mini is the more affordable option at $1.50/1M input tokens — 50% 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 Codex Mini is efficient. This means they're optimized for different workloads. Codex Mini 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 $6.00 for Codex Mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Codex Mini has the edge here at $6.00/1M output tokens.
Multimodal capabilities: Claude 3.5 Sonnet supports vision (image inputs) while Codex Mini 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 Codex Mini when:
- • Budget is a primary concern
- • You need longer outputs (up to 32,768 tokens)
- • You're already using OpenAI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude 3.5 Sonnet (Anthropic)
Codex Mini (OpenAI)
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