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Claude Haiku 5.5 · Math

Claude Haiku 5.5 for math: our test runs

Claude Haiku 5.5 ran our 5 math prompts in llmwise, through the same pipeline your messages take. Here's every reply as it came, whether it passed, what it cost and what it counts as on Pro, next to the other models.

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Based on 5 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .

Short answer

In our test runs on October 7, 2026, Claude Haiku 5.5 passed 5 of 5 of our math prompts (both hard ones): tied 1st of 18 models. Each reply counted as 1 message on Pro, where it has 60 a day, and cost $0.0001 to run on average.

Prompt by prompt

Each of the 5 math prompts, and how Claude Haiku 5.5's reply did.

Claude Haiku 5.5 on each math prompt
PromptResultCostTime
A discount, then sales taxEverydayPassed: Final answer 66: right.$0.00011.3 s
Pens at 3 for $4EverydayPassed: Final answer Buy 3 packs of 3 and 1 single pen, costing 13.50: right.$0.00021.7 s
Compound interest over three yearsEverydayPassed: Final answer 315.25: right.$0.00011.3 s
Four-digit numbers whose digits sum to 9HardPassed: Final answer 165: right.$0.00021.9 s
The highest of three dice is a 5HardPassed: Final answer 61/216: right.$0.00022.1 s

Every math reply from Claude Haiku 5.5

  1. A discount, then sales tax

    An everyday prompt: “A discount, then sales tax”, in full.

    Passed: Final answer 66: right.

    Discounted price: $80 × 0.75 = $60
Sales tax: $60 × 0.10 = $6
Total: $60 + $6 = $66

Final answer: $66

    544 tokens in, 61 out · 1.3 s · $0.0001 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·

  2. Pens at 3 for $4

    An everyday prompt: “Pens at 3 for $4”, in full.

    Passed: Final answer Buy 3 packs of 3 and 1 single pen, costing 13.50: right.

    Options per pen:
- Bundle of 3 costs $4 (about $1.33 per pen).
- Single pen costs $1.50.

For 10 pens, use as many bundles as possible:
- 3 bundles = 9 pens = $12.00
- 1 single pen = $1.50
- Total = $13.50

Check alternatives:
- 2 bundles + 4 singles = $8 + $6 = $14.00
- 0 bundles + 10 singles = $15.00
- 3 bundles + 1 single is the cheapest.

Final answer: Buy 3 packs of 3 and 1 single pen, costing $13.50

    548 tokens in, 212 out · 1.7 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·

  3. Compound interest over three years

    An everyday prompt: “Compound interest over three years”, in full.

    Passed: Final answer 315.25: right.

    Compound interest formula: A = P(1 + r)^t

A = 2000 × (1.05)^3
(1.05)^3 = 1.157625
A = 2000 × 1.157625 = 2315.25

Interest earned = 2315.25 − 2000 = 315.25

Final answer: $315.25

    542 tokens in, 104 out · 1.3 s · $0.0001 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·

  4. Four-digit numbers whose digits sum to 9

    A hard prompt: “Four-digit numbers whose digits sum to 9”, in full.

    Passed: Final answer 165: right.

    We need four-digit numbers d1 d2 d3 d4 with d1 from 1 to 9, d2, d3, d4 from 0 to 9, and digit sum 9.

Substitute e1 = d1 − 1, so e1 ranges 0 to 8, and e1 + d2 + d3 + d4 = 8 with all variables from 0 to 9.

Since the sum is 8, no variable can exceed 8, so the upper bound of 9 is never violated. The number of nonnegative solutions is C(8+3, 3) = C(11, 3) = 165.

Check: total solutions with d1 ≥ 0 allowed (i.e., first digit could be 0) for sum 9 across four digits is C(12, 3) = 220. Those with d1 = 0 correspond to three digits summing to 9: C(11, 2) = 55. So 220 − 55 = 165, which matches.

Final answer: 165

    513 tokens in, 305 out · 1.9 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·

  5. The highest of three dice is a 5

    A hard prompt: “The highest of three dice is a 5”, in full.

    Passed: Final answer 61/216: right.

    The highest number is exactly 5 when all three dice show at most 5, minus the cases where all three show at most 4:

- All dice ≤ 5: 5³ = 125 outcomes
- All dice ≤ 4: 4³ = 64 outcomes
- Exactly max 5: 125 − 64 = 61 outcomes

Out of 6³ = 216 total outcomes, the probability is 61/216. Since 61 is prime and doesn't divide 216, the fraction is already in lowest terms.

Final answer: 61/216

    540 tokens in, 250 out (71 of them reasoning) · 2.1 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·

How it compares on math

Claude Haiku 5.5 beside the job's picks among every model. 17 models share the hard-problems pick, Claude Haiku 5.5 among them.

Claude Haiku 5.5 beside other models on math
ModelPassedOn ProCost per reply
GLM 5.3Our pick: hard problems (shared), best value5 of 5250 a month on Pro$0.0004
Claude Haiku 5.5Our pick: hard problems (shared), everyday5 of 560 a day on Pro$0.0001
On Pro: Pro's count on each model. Cost: what OpenRouter charged us per reply, on average.

Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.

Claude Haiku 5.5 next to each model on math

Claude Haiku 5.5 against each model on the same 5 math prompts. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.

  • Against Claude Fable 5.1: Claude Haiku 5.5 answered 2.7× sooner (1.7 s to 4.6 s), cost 79.2× less, and passed 5 of 5 to its 5.

  • Against Claude Opus 5.5: Claude Haiku 5.5 answered 2.2× sooner (1.7 s to 3.9 s), cost 40.5× less, and passed 5 of 5 to its 5.

  • Against Claude Sonnet 5.5: Claude Haiku 5.5 answered within 10% of its time (1.7 s to 1.7 s), cost 16.8× less, and passed 5 of 5 to its 5.

  • Against Claude Sonnet 5: Claude Haiku 5.5 answered 2.3× sooner (1.7 s to 3.9 s), cost 22.5× less, and passed 5 of 5 to its 5.

  • Against Claude Haiku 4.5: Claude Haiku 5.5 answered 1.3× sooner (1.7 s to 2.2 s), cost 10.5× less, and passed 5 of 5 to its 5.

  • Against GPT-6 Astra: Claude Haiku 5.5 answered 1.5× sooner (1.7 s to 2.6 s), cost 58.1× less, and passed 5 of 5 to its 5.

  • Against GPT-6.1 Sol: Claude Haiku 5.5 answered within 10% of its time (1.7 s to 1.8 s), cost 5.9× less, and passed 5 of 5 to its 5.

  • Against GPT-6 Sol: Claude Haiku 5.5 answered 1.3× sooner (1.7 s to 2.2 s), cost 12.3× less, and passed 5 of 5 to its 5.

  • Against GPT-6 Luna: Claude Haiku 5.5 answered 1.3× sooner (1.7 s to 2.2 s), cost 1.5× more, and passed 5 of 5 to its 4. Only Claude Haiku 5.5 passed Pens at 3 for $4.

  • Against Gemini 3.1 Pro (preview): Claude Haiku 5.5 answered 4.8× sooner (1.7 s to 8.3 s), cost 68.1× less, and passed 5 of 5 to its 5.

  • Against Gemini 3.8 Flash: Claude Haiku 5.5 answered 2.7× sooner (1.7 s to 4.7 s), cost 9.7× less, and passed 5 of 5 to its 5.

  • Against DeepSeek V4.1 Flash: Claude Haiku 5.5 answered 1.9× later (1.7 s to 0.9 s), cost 1.7× less, and passed 5 of 5 to its 5.

  • Against DeepSeek V4 Pro: Claude Haiku 5.5 answered 1.6× sooner (1.7 s to 2.7 s), cost 6.0× less, and passed 5 of 5 to its 5.

  • Against Grok 4.7: Claude Haiku 5.5 answered 6.7× sooner (1.7 s to 11.7 s), cost 49.2× less, and passed 5 of 5 to its 5.

  • Against Kimi K3: Claude Haiku 5.5 answered 3.1× sooner (1.7 s to 5.4 s), cost 25.5× less, and passed 5 of 5 to its 5.

  • Against GLM 5.3: Claude Haiku 5.5 answered 1.8× later (1.7 s to 0.9 s), cost 2.4× less, and passed 5 of 5 to its 5.

  • Against GLM 5.3 Flash: Claude Haiku 5.5 answered 1.6× sooner (1.7 s to 2.7 s), cost within 10% of it, and passed 5 of 5 to its 5.

How these runs were done

Final answer. Automatic. The reply's last “Final answer:” line must hold the right value.

How the runs were done, and every math prompt.

Claude Haiku 5.5, and math, elsewhere

Questions

Is Claude Haiku 5.5 good for math?

In our test runs it passed 5 of 5 math prompts, tied 1st of the 18 models in llmwise. Every reply is on this page, so you can judge them yourself.

How many of my messages does a math reply from Claude Haiku 5.5 use?

1 message each on Pro, where it has 60 a day on Pro. The price of a message is fixed and shown before you send it, however long the reply.

How were these runs done?

The same way for every model: each prompt sent through llmwise's own pipeline, each reply checked the same way. The methods page has every prompt and how each is scored.

Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.

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