Processing or generating 5,000 words (approximately 6,665 tokens) with Llama 3.1 405B Instruct ranges from $0.002916 (cached input) to $0.0233 (full generation).
You send 5,000 words as prompt context, documentation, or background knowledge.
Llama 3.1 405B Instruct drafts a complete 5,000 words article, chapter, or code module.
4,000 words input prompt + 1,000 words output reply.
| Model | Provider | Input Cost (5,000 words) | Cached Input Cost | Output Cost (5,000 words) | Context Limit |
|---|---|---|---|---|---|
| Llama 3.1 405B Instruct (Current) | meta | $0.0117 | $0.002916 | $0.0233 | 128,000 |
| GPT-5.6 Sol | openai | $0.032 | $0.0032 | $0.192 | 1,050,000 |
| GPT-5.6 Cyber | openai | $0.08 | $0.008 | $0.48 | 1,050,000 |
| GPT-5.5 Standard | openai | $0.032 | $0.0032 | $0.192 | 512,000 |
| GPT-5.5 Pro | openai | $0.192 | $0.0192 | $1.152 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $0.128 | $0.0128 | $0.512 | 1,000,000 |
For Llama 3.1 405B Instruct (tiktoken_cl100k tokenizer), 5,000 words is approximately 6,665 tokens (an average ratio of 1.33 tokens per word in English). Code, technical vocabulary, and non-English scripts will have higher token densities.
Sending 5,000 words as input costs $0.0117 (or $0.002916 with prompt caching). Generating 5,000 words as output costs $0.0233. Output tokens are more expensive because autoregressive token generation requires significantly more computation per token.
Yes! If your input text is part of a repeated context, prompt caching saves 50% to 90% (costing $0.002916). For non-urgent asynchronous batch processing, 24-hour batch queues provide a flat 50% discount across all tokens (costing $0.005832 for input, $0.0117 for output).
At an average human reading speed of 250 words per minute, 5,000 words takes approximately 20 minutes to read. In contrast, Llama 3.1 405B Instruct can process or generate this text in seconds.