ANTHROPIC VS DEEPSEEK
Claude Opus 4.8 vs DeepSeek V4 Flash
DeepSeek V4 Flash is about 57x cheaper than Claude Opus 4.8 on a blended 3:1 input:output rate — the same 10K-in/2K-out request costs $0.002 vs $0.10. Both models have the same 1,000,000-token context window.
Pricing verified
API pricing per 1M tokens
| Model | Input / 1M tokens | Output / 1M tokens | Blended (3:1 mix) |
|---|---|---|---|
| Claude Opus 4.8 | $5.00 | $25.00 | $10.00 |
| DeepSeek V4 Flash | $0.14 | $0.28 | $0.175 |
Rates from official Anthropic pricing and official DeepSeek pricing, checked 2026-08-11.
What a real workload costs
Example: one request with 10,000 input tokens and 2,000 output tokens, then that request at 100,000 runs per month.
| Model | Per request (10K in / 2K out) | Per month (100K requests) | Monthly delta |
|---|---|---|---|
| Claude Opus 4.8 | $0.10 | $10,000 | +$9,804 |
| DeepSeek V4 Flash | $0.002 | $196 | — |
Model your own prompt sizes and volumes in the token cost analyzer, or check caching savings with the prompt caching calculator.
Specs side by side
| Spec | Claude Opus 4.8 | DeepSeek V4 Flash |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Model class | Reasoning | General text |
| Tokenizer | Proprietary (counts estimated) | Proprietary (counts estimated) |
Count tokens for each model on its own page: Claude Opus 4.8 token counter and DeepSeek V4 Flash token counter. All Anthropic models are on the Claude Token Counter. All DeepSeek models are on the DeepSeek Token Counter.
FAQ
Claude Opus 4.8 vs DeepSeek V4 Flash FAQ
Which is cheaper, Claude Opus 4.8 or DeepSeek V4 Flash?
DeepSeek V4 Flash is cheaper. At rates checked 2026-08-11, Claude Opus 4.8 costs $5.00 input / $25.00 output per 1M tokens, while DeepSeek V4 Flash costs $0.14 input / $0.28 output — about a 57x difference on a typical 3:1 input-heavy workload.
How much does a real request cost on Claude Opus 4.8 vs DeepSeek V4 Flash?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.10 on Claude Opus 4.8 and $0.002 on DeepSeek V4 Flash. At 100,000 such requests per month that is $10,000 vs $196 — a difference of $9,804 per month.
Which has the bigger context window, Claude Opus 4.8 or DeepSeek V4 Flash?
They are equal: both support 1,000,000 tokens of context, roughly 750,000 English words shared between prompt and response.
Do Claude Opus 4.8 and DeepSeek V4 Flash count tokens the same way?
Not exactly. Claude Opus 4.8 uses a proprietary tokenizer (counts are estimates) and DeepSeek V4 Flash uses a proprietary tokenizer (counts are estimates). The same prompt will tokenize differently, which shifts effective cost per word.