Claude Opus 4.7 vs Claude Haiku 4.5 for reasoning: which is better in 2026?
A head-to-head look at Claude Opus 4.7 and Claude Haiku 4.5 for reasoning. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For reasoning in May 2026, Claude Opus 4.7 edges out Claude Haiku 4.5 on the intelligenceIndex metric. Close second with stronger long-context reasoning.
Side-by-side specs
| Spec | Claude | Haiku |
|---|---|---|
| Intelligence index | 76.9 | 65.8 |
| Coding index | 82.3 | 66.2 |
| Context window | 1M tokens | 500K tokens |
| Speed (tok/s) | 88 | 205 |
| Input $/M | $15.00 | $0.80 |
| Output $/M | $75.00 | $4.00 |
| Released | Apr 23, 2026 | Mar 19, 2026 |
How they handle reasoning
Claude Opus 4.7: Close second with stronger long-context reasoning.
Claude Haiku 4.5: Cheap Claude quality for everyday tasks. The main caveat is not as strong as opus on agentic coding.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- Claude Opus 4.7: $82.50 per 1,000 queries
- Claude Haiku 4.5: $4.40 per 1,000 queries
Verdict by sub-task
- Best raw quality on reasoning:
- Best price: Claude Haiku 4.5
- Longest context: Claude Opus 4.7
- Fastest: Claude Haiku 4.5
FAQ
Is Claude Opus 4.7 better than Claude Haiku 4.5 for reasoning?
On May 2026 benchmarks (artificialanalysis.ai), Claude Opus 4.7 ranks higher than Claude Haiku 4.5 for reasoning on the intelligenceIndex metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, Claude Opus 4.7 or Claude Haiku 4.5?
Claude Opus 4.7 costs $15.00 input and $75.00 output per million tokens. Claude Haiku 4.5 costs $0.80 input and $4.00 output per million tokens.
Can I use both Claude and Haiku in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run Claude Opus 4.7 and Claude Haiku 4.5 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
Related
Try both Claude and Haiku in Admix
One subscription, side-by-side answers, no API plumbing. From $8.99/mo.
Try Admix free