Claude 3.5 Haiku vs Codex Mini
Compare Anthropic and OpenAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude 3.5 Haiku
Codex Mini
Cost Differences
Codex Mini costs more than Claude 3.5 Haiku
Feature Comparison
| Feature | Claude 3.5 Haiku | Codex Mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price | $0.80/1M tokens | $1.50/1M tokens |
| Output Price | $4.00/1M tokens | $6.00/1M tokens |
| Context Window | 200,000 tokens | 200,000 tokens |
| Max Output | 8,192 tokens | 32,768 tokens |
| Category | efficient | efficient |
| Capabilities | textvision | textcodereasoning |
| Release Date | 11/4/2024 | 2/2/2026 |
Claude 3.5 Haiku vs Codex Mini: Which Should You Choose?
Choosing between Claude 3.5 Haiku and Codex Mini depends on your priorities: cost efficiency, context length, or raw capability. Claude 3.5 Haiku is the more affordable option at $0.80/1M input tokens — 47% cheaper than Codex Mini.
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.
Both models are in the efficient category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Claude 3.5 Haiku would save you roughly $510.00/month compared to Codex Mini. For startups and indie developers, that difference can be significant.
Output costs matter too. Claude 3.5 Haiku charges $4.00/1M output tokens vs $6.00 for Codex Mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Claude 3.5 Haiku has the edge here at $4.00/1M output tokens.
Multimodal capabilities: Claude 3.5 Haiku 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 Haiku when:
- • Budget is a primary concern
- • You're already using Anthropic's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose Codex Mini when:
- • You need more capabilities (code, reasoning)
- • 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 Haiku (Anthropic)
Codex Mini (OpenAI)
Start using Claude 3.5 Haiku today
Sign Up for Anthropic →Start using Codex Mini today
Sign Up for OpenAI →