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Models / Compare / deepseek-v4-flash vs deepseek-v4-pro

deepseek-v4-flash vs deepseek-v4-pro

Both models are available on RelayRouter through one base URL. This page shows which public groups serve each one, what the groups charge, and the protocol to call, so you can pick by price and integration effort. It does not rank quality.

deepseek-v4-flash

deepseek-v4-flash

Provider
DeepSeek
Modality
text generation
Public groups
1
Cheapest group
DeepSeek: ¥1.1 (about $0.162) per 1M input tokens, ¥4.4 (about $0.647) per 1M output tokens; off-peak; ×2 on weekdays 09:00 to 12:00 and 14:00 to 18:00 Beijing time
Protocols
Anthropic Messages API

deepseek-v4-pro

deepseek-v4-pro

Provider
DeepSeek
Modality
text generation
Public groups
1
Cheapest group
DeepSeek: ¥4.95 (about $0.728) per 1M input tokens, ¥14.85 (about $2.18) per 1M output tokens; off-peak; ×2 on weekdays 09:00 to 12:00 and 14:00 to 18:00 Beijing time
Protocols
Anthropic Messages API

Same request, two models

main.pypython
import anthropic

client = anthropic.Anthropic(
    api_key="your-relayrouter-key",
    base_url="https://relayrouter.io",
)

msg = client.messages.create(
    model="deepseek-v4-flash",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello!"}],
)
print(msg.content[0].text)
main.pypython
import anthropic

client = anthropic.Anthropic(
    api_key="your-relayrouter-key",
    base_url="https://relayrouter.io",
)

msg = client.messages.create(
    model="deepseek-v4-pro",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello!"}],
)
print(msg.content[0].text)

Questions

Is deepseek-v4-flash or deepseek-v4-pro cheaper on RelayRouter?

Compare the cheapest group of each: deepseek-v4-flash is served by "DeepSeek" (¥1.1 (about $0.162) per 1M input tokens, ¥4.4 (about $0.647) per 1M output tokens; off-peak; ×2 on weekdays 09:00 to 12:00 and 14:00 to 18:00 Beijing time) and deepseek-v4-pro by "DeepSeek" (¥4.95 (about $0.728) per 1M input tokens, ¥14.85 (about $2.18) per 1M output tokens; off-peak; ×2 on weekdays 09:00 to 12:00 and 14:00 to 18:00 Beijing time). Settlement rates apply to the provider's standard usage, so a model with a higher official price can still cost more at a lower rate.

Can I switch between the two without changing code?

If both models sit in groups with the same protocol you only change the model name. If the protocols differ, point the matching SDK at https://relayrouter.io; the base URL and key handling stay the same.

Does this page compare output quality?

No. It compares availability, protocols and price on RelayRouter. Run your own evaluation prompts through both models; failed requests are not billed.

Rates are indicative; the console shows the authoritative rate at request time. See pricing and the full model list.