Claude Haiku 4.5 vs GPT-4o— Pricing & Token Cost Comparison
Side-by-side API pricing and tokenizer details for Claude Haiku 4.5 (Anthropic) and GPT-4o (OpenAI).
Side-by-side pricing
| Feature | Claude Haiku 4.5 | GPT-4o |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input (per 1M tokens) | $0.800 | $2.50 |
| Output (per 1M tokens) | $4.00 | $10.00 |
| Context caching | Yes — 90% off cached tokens | No |
| Batch API discount | Not available | 50% off |
| Context window | 200K tokens | 128K tokens |
| Tokenizer | Anthropic tokenizer | o200k_base (tiktoken) |
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
Claude Haiku 4.5
$1.2000
Input: $0.4000 + Output: $0.8000
GPT-4o
$3.2500
Input: $1.2500 + Output: $2.0000
Claude Haiku 4.5 is 63% cheaper for this workload — saving $2.0500 per month at this volume.
Frequently asked questions
- Is Claude Haiku 4.5 cheaper than GPT-4o?
- Yes, Claude Haiku 4.5 is cheaper for the typical workload above. At $0.800/1M input and $4.00/1M output tokens, it costs $1.2000 versus $3.2500 for GPT-4o — a 63% difference. Costs scale linearly, so larger workloads amplify this gap.
- What is the context window of Claude Haiku 4.5 vs GPT-4o?
- Claude Haiku 4.5 supports a 200K token context window. GPT-4o supports a 128K token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
- Do Claude Haiku 4.5 or GPT-4o support context caching or batch discounts?
- Claude Haiku 4.5 supports context caching (90% off repeated tokens). It does not offer a batch API discount. GPT-4o does not support context caching. It offers a 50% Batch API discount.
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