Claude Haiku 5.5
- Input / 1M tokens
- $0.10
- Output / 1M tokens
- $0.50
API models · Side by side
Claude Haiku 5.5 vs DeepSeek V4.1 Flash
Claude Haiku 5.5 and DeepSeek V4.1 Flash are both low-cost models. Haiku is cheaper for normal requests and accepts files. DeepSeek is cheaper for very long prompts and can write much longer replies.
DeepSeek V4.1 Flash
- Input / 1M tokens
- $0.15
- Output / 1M tokens
- $0.60
The short answer
Haiku charges $0.10 per million input tokens and $0.50 per million output tokens, rising to $0.50 and $2.50 above 100,000 tokens. DeepSeek charges $0.15 and $0.60 off-peak, and $0.30 and $1.20 at weekday peak times. Haiku accepts files; DeepSeek takes text and images only.
Compare the details
Compare context, supported inputs and usage costs. Highlighted rows show a difference.
| Feature | Claude Haiku 5.5 | DeepSeek V4.1 Flash |
|---|---|---|
| Input formats | file, image, text | image, text |
| Output formats | text | text |
| Context / position limit | 1,000,000 | 1,048,576 |
| Maximum output tokens | 128,000 | 393,216 |
| Developer features | Reasoning output, Completion limit, Output limit, Reasoning controls, Thinking effort, Response format, Stop sequences, Structured output, Tool selection, Tool calling, Response length | frequency penalty, Reasoning output, logit bias, logprobs, Output limit, min p, presence penalty, Reasoning controls, Thinking effort, repetition penalty, Response format, Seed, Stop sequences, Structured output, Temperature, Tool selection, Tool calling, top k, top logprobs, Sampling controls |
| Cached input / 1M tokens | $0.01 | $0.003000 |
| Cache write / 1M tokens | $0.13 | Unknown |
| USD input / 1M tokens | $0.10 | $0.15 |
| USD output / 1M tokens | $0.50 | $0.60 |
| Model identifier | anthropic/claude-haiku-5.5 | deepseek/deepseek-v4.1-flash |
API pricing
Prices are in USD per million tokens. Input is what you send; output is what the model generates. Claude and ChatGPT subscriptions are billed separately.
Claude Haiku 5.5: long-prompt rates
- Long-prompt threshold: 100,000 prompt tokens. Input: $0.50 / 1M. Output: $2.50 / 1M.
DeepSeek V4.1 Flash: long-prompt rates
- Long-prompt threshold: 0 prompt tokens. Input: $0.15 / 1M. Output: $0.60 / 1M.
- Long-prompt threshold: 0 prompt tokens. Input: $0.15 / 1M. Output: $0.60 / 1M.
- Long-prompt threshold: 0 prompt tokens. Input: $0.30 / 1M. Output: $1.20 / 1M.
- Long-prompt threshold: 0 prompt tokens. Input: $0.15 / 1M. Output: $0.60 / 1M.
- Long-prompt threshold: 0 prompt tokens. Input: $0.30 / 1M. Output: $1.20 / 1M.
- Long-prompt threshold: 0 prompt tokens. Input: $0.15 / 1M. Output: $0.60 / 1M.
Tools, images and additional reasoning can add charges. The examples below cover input and output tokens only.
Compare local modelsWhat those prices mean in practice
Each example uses the same token budget for both models. These are calculations, not measured workloads. Cache discounts, media, tools and extra reasoning are excluded.
| Workload | Claude Haiku 5.5 | DeepSeek V4.1 Flash |
|---|---|---|
| 1,000 short requestsPer request: 2,000 input + 500 output tokens | $0.45 | $0.60 |
| 100 document summariesPer request: 20,000 input + 1,000 output tokens | $0.25 | $0.36 |
| 10 long-document requestsPer request: 300,000 input + 2,000 output tokens | $1.55 | $0.46 |
Estimate = requests × (input tokens × input price + output tokens × output price) ÷ 1,000,000. Long-prompt rates are applied where the pricing data provides them. Real requests can use different amounts of output.
Beyond the price tag
Short requests: Haiku is cheaper
For 1,000 short requests, Haiku costs about $0.45 and DeepSeek about $0.60 off-peak, or $1.20 at peak. For tagging, extraction and short replies, Haiku comes out ahead at any time of day.
Long prompts: DeepSeek is cheaper
Once a prompt passes 100,000 tokens, Haiku's input price jumps to $0.50 per million. DeepSeek has no long-prompt surcharge. In our example of ten 300,000-token requests, DeepSeek costs about $0.46 off-peak against Haiku's $1.55.
Files and documents
Haiku can read PDFs and other files directly. DeepSeek needs documents converted to text or page images first, and tables or layout can get lost. For invoices and forms, check that the important fields survive the conversion.
Which one should you pick?
Choose Claude Haiku 5.5 for short, high-volume tasks and document uploads. Choose DeepSeek V4.1 Flash for very long text prompts, very long replies, or off-peak batch jobs.
Common questions
Which is cheaper?
Haiku for short requests. DeepSeek for prompts over 100,000 tokens. DeepSeek's price also depends on the time of day.
Can both read a PDF?
Haiku can, directly. DeepSeek needs the PDF converted to text or images first.
Does a lower price mean equal quality?
No. Price is just the cost per token. Test both on your own tasks.