Cheaper overall
Claude Haiku 5.5
95% lower blended rate
Higher benchmark scores
Claude Sonnet 5.5
leads on 12 of 13 figures
Cheaper cached input
Claude Haiku 5.5
$0.01 vs $0.10, 90% less
Where each one wins
Claude Haiku 5.5
- Cheaper input tokens $0.10 vs $2.00, 95% less
- Cheaper output tokens $0.50 vs $10.00, 95% less
- Cheaper cached input $0.01 vs $0.10, 90% less
- Cheaper on all four workloads
- Higher answer reliability (Omniscience Non-Hallucination) 59.6 vs 53
Claude Sonnet 5.5
- Higher overall intelligence (Intelligence Index) 56 vs 43.4
- Higher expert-exam performance (Humanity's Last Exam) 55 vs 44.4
- Higher scientific coding (SciCode) 61 vs 55
- Ahead on 9 more benchmark figures
What four workloads cost
One run, and the same run a thousand times.
The gap opens on long prompts: Claude Haiku 5.5 costs $0.2075 against $0.8300, a difference of $622.50 over a thousand runs.
| Workload | Claude Haiku 5.5 | Claude Sonnet 5.5 | ×1,000 | Difference |
|---|---|---|---|---|
| Chat turn 1,000 in / 500 out | $0.0004 | $0.0070 | $0.3500 / $7.00 | Claude Haiku 5.5 is 95% cheaper |
| RAG answer 10,000 in / 800 out | $0.0014 | $0.0280 | $1.40 / $28.00 | Claude Haiku 5.5 is 95% cheaper |
| Agent loop 32,000 in / 700 out × 20 calls | $0.0170 | $0.2800 | $17.00 / $280.00 | Claude Haiku 5.5 is 94% cheaper |
| Long document 400,000 in / 3,000 out | $0.2075 | $0.8300 | $207.50 / $830.00 | Claude Haiku 5.5 is 75% cheaper |
Price per 1M tokens
Above 100,000 input tokens the rates change, and the new rate applies to the whole request, not just the tokens past that point: Claude Haiku 5.5's input goes from $0.1000 to $0.5000. It does not change which of the two is cheaper.
| Context band | Price | Claude Haiku 5.5 | Claude Sonnet 5.5 | Difference |
|---|---|---|---|---|
| Prompts up to 100,000 tokens | Input | $0.10 | $2.00 | Claude Haiku 5.5 is 95% cheaper |
| Prompts up to 100,000 tokens | Cached input | $0.01 | $0.10 | Claude Haiku 5.5 is 90% cheaper |
| Prompts up to 100,000 tokens | Output | $0.50 | $10.00 | Claude Haiku 5.5 is 95% cheaper |
| Prompts over 100,000 tokens | Input | $0.50 | $2.00 | Claude Haiku 5.5 is 75% cheaper |
| Prompts over 100,000 tokens | Cached input | $0.05 | $0.10 | Claude Haiku 5.5 is 50% cheaper |
| Prompts over 100,000 tokens | Output | $2.50 | $10.00 | Claude Haiku 5.5 is 75% cheaper |
Blended: Claude Haiku 5.5 $0.20, Claude Sonnet 5.5 $4.00 per 1M — one rate at 3:1 input to output, for comparing two models at a glance.
Both priced by Anthropic. Standard tier, pay-as-you-go.
Other pricing tiers
Both models offer Batch, worth up to 50% off their standard rates, and the cheaper model is the same one on every tier — so the tier you buy changes the bill rather than the choice.
Every tier either model sells is here, so this is the whole price sheet. A saving is measured against that model's own standard rate — how we read tiers.
| Tier | Claude Haiku 5.5 | Claude Sonnet 5.5 | Cheaper |
|---|---|---|---|
| Batch | $0.05 in / $0.25 out 50% off Standard | $1.00 in / $5.00 out 50% off Standard | Claude Haiku 5.5 |
Benchmarks
They share 14 figures: Claude Haiku 5.5 leads on 1, Claude Sonnet 5.5 on 12. The widest gap is 146 points, on Gamedev Elo.
Overall intelligence
Intelligence Index — Overall intelligence across reasoning, knowledge & math evals
Claude Sonnet 5.5 ahead by 12.6
Expert-exam performance
Humanity's Last Exam — Expert-level questions across many academic domains
Claude Sonnet 5.5 ahead by 10.6
Long-context reasoning
AA-LCR — Long-context reasoning across large inputs
Level
Scientific coding
SciCode — Research-level scientific coding tasks
Claude Sonnet 5.5 ahead by 6
Physics research reasoning
CritPt — Unpublished physics research reasoning problems
Claude Sonnet 5.5 ahead by 12.5
Real-world task performance
GDPval — Economically valuable, real-world knowledge work
Claude Sonnet 5.5 ahead by 10.9
Factual accuracy
Omniscience Accuracy — Breadth of factual knowledge across domains
Claude Sonnet 5.5 ahead by 17.5
Answer reliability
Omniscience Non-Hallucination — How reliably the model avoids fabricated answers
Claude Haiku 5.5 ahead by 6.6
3d Elo
Design Arena head-to-head rating in the 3d category
Claude Sonnet 5.5 ahead by 122
Codecategories Elo
Design Arena head-to-head rating in the codecategories category
Claude Sonnet 5.5 ahead by 87
Dataviz Elo
Design Arena head-to-head rating in the dataviz category
Claude Sonnet 5.5 ahead by 89
Gamedev Elo
Design Arena head-to-head rating in the gamedev category
Claude Sonnet 5.5 ahead by 146
Uicomponent Elo
Design Arena head-to-head rating in the uicomponent category
Claude Sonnet 5.5 ahead by 71
Website Elo
Design Arena head-to-head rating in the website category
Claude Sonnet 5.5 ahead by 65
Each figure is that model's best published run, with the effort level named beside it — where these scores come from.
Specifications
Only Claude Haiku 5.5 lists code execution and computer use.
| Specification | Claude Haiku 5.5 | Claude Sonnet 5.5 |
|---|---|---|
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 128,000 tokens | 128,000 tokens |
| Takes in | Text, image, file | Text, image, file |
| Puts out | Text | Text |
| Knowledge cutoff | 30 Jun 2026 | — |
| Released | 7 Oct 2026 | 28 Sep 2026 |
| Status | Active | Active |
| Sold by | Anthropic, Perplexity | Anthropic, Perplexity |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Web search | Not listed | Not listed |
| Prompt caching | Yes | Yes |
| Code execution | Yes | Not listed |
| Computer use | Yes | Not listed |
| Open weights | Not listed | Not listed |
| Reasoning | Yes | Yes |
FAQs
- Is Claude Haiku 5.5 cheaper than Claude Sonnet 5.5?
- Yes. A 1,000-token prompt with a 500-token reply costs $0.0004 on Claude Haiku 5.5 and $0.0070 on Claude Sonnet 5.5, and the same model is cheaper on every workload on this page.
- How much do Claude Haiku 5.5 and Claude Sonnet 5.5 cost per 1M tokens?
- Claude Haiku 5.5 costs $0.10 for input and $0.50 for output. Claude Sonnet 5.5 costs $2.00 and $10.00. Standard pay-as-you-go rates, as of 8 Oct 2026.
- Which is better, Claude Haiku 5.5 or Claude Sonnet 5.5?
- On published benchmarks, Claude Sonnet 5.5. It leads on 12 of the 14 figures both models report, including overall intelligence (Intelligence Index), where it scores 56 against 43.4.
- Is Batch pricing cheaper for Claude Haiku 5.5 or Claude Sonnet 5.5?
- Batch input costs $0.05 on Claude Haiku 5.5 and $1.00 on Claude Sonnet 5.5, 50% below the standard rate on both.