Claude Haiku 4.5 vs Claude Opus 4.5
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Claude Haiku 4.5
Anthropic · Oct 2025
Anthropic's fast tier: Sonnet-4-class coding performance at $1/$5 and more than twice the speed.
Claude Opus 4.5
Anthropic · Nov 2025
The November 2025 Opus that cut flagship pricing 3x to $5/$25 and was the first model past 80% on SWE-bench Verified.
The verdict
Claude Opus 4.5 wins 3 of the 3 benchmarks these models share, against 0 for Claude Haiku 4.5. On price the gap is dramatic: Claude Haiku 4.5 works out roughly 5.0x cheaper per blended million tokens.
Benchmark head-to-head 0–3
Specs & pricing
| Claude Haiku 4.5 | Claude Opus 4.5 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $1 | $5 |
| Output price / 1M | $5 | $25 |
| Context window | 200K | 200K |
| Max output | 64K | 64K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image |
| Knowledge cutoff | Feb 2025 | Mar 2025 |
| Released | Oct 2025 | Nov 2025 |
| Example monthly cost* | $17.50 | $87.50 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Claude Haiku 4.5 or Claude Opus 4.5?
- Claude Opus 4.5 wins 3 of the 3 benchmarks these models share, against 0 for Claude Haiku 4.5. On price the gap is dramatic: Claude Haiku 4.5 works out roughly 5.0x cheaper per blended million tokens.
- Which is cheaper, Claude Haiku 4.5 or Claude Opus 4.5?
- Claude Haiku 4.5 costs $1/$5 per million input/output tokens, while Claude Opus 4.5 costs $5/$25. For a typical workload of 10M input and 1.5M output tokens per month, that's $17.50 versus $87.50.
- Which model is better for coding, Claude Haiku 4.5 or Claude Opus 4.5?
- On SWE-bench Verified — the standard agentic-coding benchmark — Claude Opus 4.5 scores 80.9% versus 73.3% for Claude Haiku 4.5, making Claude Opus 4.5 the stronger pick for coding agents.
More comparisons
Claude Haiku 4.5 vs GPT-5.5Claude Opus 4.5 vs GPT-5.5Claude Haiku 4.5 vs GPT-5.2Claude Opus 4.5 vs GPT-5.2Claude Haiku 4.5 vs GPT-5.1Claude Opus 4.5 vs GPT-5.1Claude Haiku 4.5 vs GPT-5Claude Opus 4.5 vs GPT-5Claude Haiku 4.5 vs GPT-5 miniClaude Opus 4.5 vs GPT-5 miniClaude Haiku 4.5 vs OpenAI o3Claude Opus 4.5 vs OpenAI o3