Claude · Fast / Budget · 200K context window

Claude Haiku 4.5 pricing for math reasoning

$0.0165 per call at 1,500 input / 3,000 output tokens.

Per call

$0.0165

10K calls/mo

$165

Cache savings

90% off input

Batch savings

50% off all

Calculate your Claude Haiku 4.5 costs

Adjust token counts, volume, and discount toggles to model your math reasoning spend. Prices verified daily against provider pricing pages.

Configure your usage

1,500
100100K
3,000
5050K
10,000
1001M

Estimated cost

Monthly cost
$165
10,000 calls/month
Cost per call$0.0165
Daily cost$6
Input rate$1.00/MTok
Output rate$5.00/MTok
Analyze your real spend

Quick start

Call Claude Haiku 4.5 with the Anthropic Python SDK:

from anthropic import Anthropic

client = Anthropic()
response = client.messages.create(
    model="claude-haiku-4-5",
    max_tokens=3000,
    messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.0165 per call at standard rates
# Input:  $1.00/MTok
# Output: $5.00/MTok

How Claude Haiku 4.5 compares on cost

Per-call cost for all models scoring 50+ on math reasoning benchmarks. Hover for details.

Cheapest viable option: Claude Sonnet 5 at $0.0330/call (-100% less, 90/100 quality).

What drives math reasoning cost

Short problems, long solutions. Input is trivial and output is large because the derivation is the answer, so output rate is effectively the only price that matters. Models differ sharply in how much they show their working, which means two models at the same output rate can differ substantially in real cost per problem.

For Claude Haiku 4.5 specifically, that means output tokens cost 5.0x more than input, at $5.00 vs $1.00 per MTok. At this use case’s 1,500/3,000 token split, output accounts for 91% of the $0.0165 per-call cost.

Complete Claude Haiku 4.5 pricing breakdown

Standard token rates

Direction$/MTokTokens per call
Input$1.001,500
Output$5.003,000

Prompt caching: 90% off input tokens

Caching drops input cost from $1.00 to $0.10/MTok. For repeated system prompts, that saves $0.001350 per call.

Batch API: 50% off all tokens

Submit requests asynchronously and receive 50% off all token costs. This works best for offline pipelines where latency requirements are flexible.

Monthly cost projections

Monthly volumeCost per callStandard monthlyCached monthlyYou save with caching
10,000 calls$0.0165$165$151.5$13.5
50,000 calls$0.0165$825$757.5$67.5
100,000 calls$0.0165$1,650$1,515$135
500,000 calls$0.0165$8,250$7,575$675
1,000,000 calls$0.0165$16,500$15,150$1,350

Claude Haiku 4.5 quality benchmarks for math reasoning

Consider alternatives for math reasoning

Scores 65/100 (rank #7 of 20). Better options exist at similar price points for math reasoning.

Top-ranked: Claude Fable 5 (98/100) at $0.1650/call

Performance across all task types

Claude Haiku 4.5 scores by task type. Math Reasoning highlighted.

Classification90Extraction88Q&A86Summarization82Code Generation72Code Review70Reasoning *65Creative Writing60
Task typeConfidence scoreRank out of 20
Classification90/100#2
Extraction88/100#2
Q&A86/100#4
Summarization82/100#5
Code Generation72/100#6
Code Review70/100#7
Reasoning(current page)65/100#7
Creative Writing60/100#7

Confidence scores are a third-party benchmark snapshot from week 29 of 2026. This snapshot is 8 weeks old, so treat the scores as directional and validate against your own evals.

Alternative models for math reasoning

9 models score 80+ on math reasoning benchmarks, sorted by input rate. Cheapest: Claude Sonnet 5 (-100% less, 90/100 quality).

ModelProviderInput $/MTokOutput $/MTokQualityPer callvs Claude
Claude Sonnet 5Claude$2.00$10.0090/100$0.0330100% more
GPT 5.6 TerraGPT$2.00$12.0082/100$0.0390136% more
Gemini 3.1 ProGemini$2.00$12.0090/100$0.0390136% more
GPT 5.4GPT$2.50$15.0080/100$0.0488195% more
Claude Sonnet 4.6Claude$3.00$15.0088/100$0.0495200% more
GPT 5.6 SolGPT$4.00$20.0096/100$0.0660300% more
Claude Opus 4.8Claude$5.00$25.0097/100$0.0825400% more
GPT 5.5GPT$5.00$30.0095/100$0.0975491% more
Claude Fable 5Claude$10.00$50.0098/100$0.1650900% more

About Claude Haiku 4.5

Provider

Claude

Tier

Fast / Budget

Context

200K tokens

Released

Oct 2025

Other models from Claude

ModelTierInput $/MTokOutput $/MTokContext
Claude Opus 4.8Flagship$5.00$25.00200K
Claude Sonnet 4.6Mid-tier$3.00$15.00200K
Claude Sonnet 5Mid-tier$2.00$10.00200K
Claude Opus 5Flagship$5.00$25.001,000K
Claude Fable 5.1Flagship$10.00$50.001,000K
Claude Fable 5Flagship$10.00$50.001,000K

You can compare Claude Haiku 4.5 head-to-head against any other model on our model comparison pages, or track how pricing has changed over time on the pricing history tracker.

Frequently asked questions

How much does Claude Haiku 4.5 cost for math reasoning per API call?

A typical math reasoning call using Claude Haiku 4.5 costs about $0.0165 per call. This estimate uses 1,500 input tokens and 3,000 output tokens at standard rates. Standard rates are $1.00 per million input tokens and $5.00 per million output tokens.

Is Claude Haiku 4.5 the best model for math reasoning?

Claude Haiku 4.5 scores 65 out of 100 on math reasoning benchmarks overall. It ranks #7 across all 20 models in our cross-provider registry. The highest-ranked model for this task is Claude Fable 5 from Claude. That model scores 98/100 on this task type. Confidence scores are a third-party benchmark snapshot from week 29 of 2026. This snapshot is 8 weeks old, so treat the scores as directional and validate against your own evals.

What is the cheapest model for math reasoning with good quality?

The most affordable model for math reasoning above 80/100 quality is Claude Sonnet 5. It comes from Claude at $2.00 per million input tokens. Output costs $10.00 per million tokens with a quality score of 90/100. Switching from Claude Haiku 4.5 to Claude Sonnet 5 saves about -100% per API call.

How can I reduce my Claude Haiku 4.5 costs for math reasoning?

Three strategies lower Claude Haiku 4.5 costs for this task type effectively. Prompt caching gives a 90% discount on input tokens when reusing system prompts. The batch API gives 50% off all tokens for asynchronous processing workloads. Prompt optimization reduces token counts through more concise instructions and context windows. Combining caching with batching brings your cost from $0.0165 to about $0.000825 per call.

How does Claude Haiku 4.5 pricing compare to other Claude models?

Claude has 6 other models alongside Claude Haiku 4.5 today: Claude Opus 4.8 at $5.00/$25.00 per million tokens (flagship), Claude Sonnet 4.6 at $3.00/$15.00 per million tokens (mid-tier), Claude Sonnet 5 at $2.00/$10.00 per million tokens (mid-tier), Claude Opus 5 at $5.00/$25.00 per million tokens (flagship), Claude Fable 5.1 at $10.00/$50.00 per million tokens (flagship), Claude Fable 5 at $10.00/$50.00 per million tokens (flagship). The right choice depends on whether your math reasoning workload prioritizes quality, cost, or speed.

What context window does Claude Haiku 4.5 support?

Claude Haiku 4.5 supports a context window of 200K tokens per API call. This sets the maximum combined length of your input prompt and generated response. For math reasoning, typical calls use 1,500 input and 3,000 output tokens. That is well within this limit, leaving room for longer prompts or multi-turn conversations.

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This calculator estimates costs based on published rates only. Connect your API usage to see where your money goes and which models drive your spend.