Claude Haiku 4.5 vs Claude Sonnet 5 — Side-by-side pricing
Side-by-side API pricing and tokenizer details for Claude Haiku 4.5 (Anthropic) and Claude Sonnet 5 (Anthropic).
Side-by-side pricing
| Feature | Claude Haiku 4.5 | Claude Sonnet 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input (per 1M tokens) | $1.00 | $2.00 |
| Output (per 1M tokens) | $5.00 | $10.00 |
| Context caching | Yes — 90% off cached tokens | Yes — 90% off cached tokens |
| Batch API discount | 50% off | 50% off |
| Context window | 200K tokens | 1M tokens |
| Tokenizer | Anthropic tokenizer | Anthropic tokenizer (Opus 4.7+) |
ⓘ Claude Sonnet 5: Introductory pricing through Aug 31, 2026. Standard price: $3.00 / $15.00 per MTok after that date.
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
Claude Haiku 4.5
$1.5000
Input: $0.5000 +Output: $1.0000
Claude Sonnet 5
$3.0000
Input: $1.0000 +Output: $2.0000
Claude Haiku 4.5 is 50% cheaper for this workload — saving $1.5000 per month at this volume.
Frequently asked questions
Yes, Claude Haiku 4.5 is cheaper for the typical workload above. At $1.00/1M input and $5.00/1M output tokens, it costs $1.5000 versus $3.0000 for Claude Sonnet 5 — a 50% difference. Costs scale linearly with request volume, so larger workloads amplify this gap.
Claude Haiku 4.5 supports a 200K token context window. Claude Sonnet 5 supports a 1M token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
Claude Haiku 4.5 supports context caching (90% off repeated tokens). It offers a 50% Batch API discount. Claude Sonnet 5 supports context caching (90% off repeated tokens). It offers a 50% Batch API discount.
No, they use different tokenizers. Claude Haiku 4.5 uses the Anthropic tokenizer, while Claude Sonnet 5 uses Anthropic tokenizer (Opus 4.7+). Different tokenizers split text differently, so the same prompt will produce different token counts on each model — the effective cost difference may be larger or smaller than the per-token price difference alone suggests.
Claude Haiku 4.5 (Anthropic): $1 input / $5 output per 1M tokens. Claude Sonnet 5 (Anthropic): $2 input / $10 output per 1M tokens. Rates shown before caching or batch discounts.
For an 80% output / 20% input workload — typical for code generation or long-form writing — Claude Haiku 4.5 costs $4.2000 per 1M total tokens and Claude Sonnet 5 costs $8.4000. Claude Haiku 4.5 is 50% cheaper for this pattern. For your exact ratio, paste a real prompt into the calculator above.
Claude Haiku 4.5 has a 200K-token context window — approximately 150K words or ~600 pages of standard text. Claude Sonnet 5 has a 1M-token context window — approximately 750K words or ~3K pages. (Estimates assume ~0.75 words per token.)
Calculate costs for your actual prompt
Paste your prompt into the calculator and get exact token counts using each model's real tokenizer — all in your browser.
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