Claude Haiku 4.5 vs GPT-4o
2026 - Pricing, benchmarks, and use case comparison
Quick take
- •Claude Haiku 4.5 is 68% cheaper on input tokens - better for high-volume workloads.
- •Claude Haiku 4.5 has a 200K context window - 2x larger than GPT-4o's 128K. Better for long documents and large codebases.
Specs comparison
| Claude Haiku 4.5 | GPT-4o | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Type | Closed source | Closed source |
| Context window | ✓200K | 128K |
| Input / 1M tokens | ✓$0.80 | $2.50 |
| Output / 1M tokens | $4.00 | $10.00 |
| Release date | 2025-10 | 2024-05 |
Benchmarks
| Benchmark | Claude Haiku 4.5 | GPT-4o |
|---|---|---|
| MMLU | ~82% | 88.7% |
| HumanEval | ~88% | 90.2% |
| GPQA | - | 53.6% |
Scores sourced from official provider release posts.
Strengths
Claude Haiku 4.5
- ✓Lowest latency in the Claude lineup
- ✓Extremely cost-effective at scale
- ✓Strong at classification and extraction
- ✓Good at following structured output schemas
- ✓Handles 200K context at low cost
GPT-4o
- ✓Native multimodal input (text, image, audio)
- ✓Fast response times at this capability level
- ✓Strong on structured data and JSON output
- ✓Best ecosystem support across SDKs and tools
- ✓Real-time audio capabilities
Which should you choose?
Choose Claude Haiku 4.5 if you need...
- →High-volume API pipelines
- →Real-time classification
- →Form and document extraction
- →Low-latency chatbots
Choose GPT-4o if you need...
- →Multimodal apps
- →High-volume production use
- →Chatbots and assistants
- →Structured data extraction