GPT-5.5 vs Claude Haiku 4.5
How GPT-5.5 (OpenAI) and Claude Haiku 4.5 (Anthropic) compare on price, context window and best-fit use case.
In short: GPT-5.5 is best for Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost, while Claude Haiku 4.5 suits Real-time chat, routing, classification, and high-throughput pipelines on a budget. On price it's $5.00 vs $1.00 per 1M input tokens; on context, ~1.05M tokens (128K max output) vs 200K tokens.
| Spec | GPT-5.5 | Claude Haiku 4.5 |
|---|---|---|
| Developer | OpenAI | Anthropic |
| Context window | ~1.05M tokens (128K max output) | 200K tokens |
| Input price /1M | $5.00 | $1.00 |
| Output price /1M | $30.00 | $5.00 |
| Modalities | text, image | text, image |
| Best for | Highest-stakes reasoning, complex agents, and frontier coding tasks where capability outweighs cost. | Real-time chat, routing, classification, and high-throughput pipelines on a budget. |
GPT-5.5
- State-of-the-art reasoning and agentic workflows
- 1M+ context window
- Strong coding and tool use
- Multimodal (text + image input)
Claude Haiku 4.5
- Low latency
- Cheapest Claude tier
- Good reasoning for its size
- Strong tool use