deepseek-v4-pro is DeepSeek’s reasoning flagship and the most cost-effective high-capability model on ByteSpike. A fraction of the cost of gpt-5-4 at comparable quality on most benchmarks, with the same dual-protocol surface that DeepSeek exposes natively.
Pricing: 0.87 / 1M output, $0.004 / 1M cache read — see the rate card.
Protocols
Both protocols are first-class. The same ByteSpike key works on either; pick whichever shape your client already speaks.
Quickstart
Capabilities
The reasoning chain (“thinking output”) appears as:
- On the OpenAI endpoint:
reasoning_contentfield on the choice. - On the Anthropic endpoint: a
thinkingblock ahead of thetextblock incontent[].
When to use
- Cost-sensitive reasoning — when you’d reach for
gpt-5-4but want a fraction of the cost. - Agents on a budget —
tool_useblocks pass through transparently via the Anthropic endpoint; DOSIA Agent uses this model heavily. - DOSIA Agent mode — must use the Anthropic Messages endpoint.
- Vision-required tasks — not on HTTP API today.
- Web search — DeepSeek does not expose a grounding tool.
- Long context — 64K is the ceiling here; go to
claude-opus-4-8(200K) orgemini-3-5-flash(1M).
Next
- deepseek-v4-flash — small-mid