We pin the DeepSeek V4 Pro 0813 API for our eval suite — a frozen build means our numbers actually compare run to run.
The DeepSeek V4 Pro 0813 API is a pinned snapshot build of DeepSeek V4 Pro — the same flagship reasoning and coding capability, frozen at the 0813 version so behavior stays reproducible across runs. The DeepSeek V4 Pro 0813 API keeps a 1M-token context, function calling, and the OpenAI-compatible chat-completions shape: point any existing SDK at RouterBase and set the model to deepseek-v4-pro-0813. Input at $1.32 / 1M tokens, output at $3.96 / 1M tokens, cached input at $0.35 / 1M tokens — all through one REST endpoint.
Input
DeepSeek V4 Pro (0813)
Hi! I'm a helpful AI assistant. What can I do for you?
DeepSeek V4 Pro 0813 API: Chat
Use the DeepSeek V4 Pro 0813 API to run a pinned snapshot of DeepSeek V4 Pro — the same flagship capability, frozen at the 0813 build for reproducible production runs.
The DeepSeek V4 Pro 0813 API is a pinned snapshot of DeepSeek V4 Pro — the high-capability tier of the newest DeepSeek generation, frozen at the 0813 build. You get the same complex reasoning, hard coding, and multi-step agent strength as rolling V4 Pro, but the version is locked, so evals, regressions, and agent behavior stay reproducible across runs. It keeps a 1M-token context window, function calling, and is fully OpenAI-compatible: point any existing SDK at RouterBase, set the model to deepseek-v4-pro-0813, and your first call goes through immediately.
Pricing on the DeepSeek V4 Pro 0813 API is $1.32 / 1M input tokens, $3.96 / 1M output tokens, and $0.35 / 1M cached-input reads. One RouterBase key reaches the DeepSeek V4 Pro 0813 API and 200+ other models — no DeepSeek-specific SDK or separate credentials required.
Six reasons teams pin the DeepSeek V4 Pro 0813 API
From reproducible runs to near-free cached reads — what makes the 0813 snapshot stand out.
Pinned 0813 snapshot
The DeepSeek V4 Pro 0813 API is frozen at the 0813 build — the version never shifts under you, so outputs, evals, and agent behavior stay reproducible run to run.
1M-token context
The DeepSeek V4 Pro 0813 API accepts up to 1 million tokens per request — whole codebases, long document chains, or deep agent histories fit in one call without chunking.
Flagship reasoning + coding
You keep the full V4 Pro capability on the DeepSeek V4 Pro 0813 API — complex reasoning, hard coding, and multi-step agents, tuned for getting the answer right.
Function calling for agents
Reliable function calling and structured JSON come back in the standard OpenAI schema, so the DeepSeek V4 Pro 0813 API drops straight into tool-using agent stacks.
Cheap cached reads
Cached input on the DeepSeek V4 Pro 0813 API is $0.35 / 1M tokens — repeated context and stable system prompts cost far less than fresh input.
One key for 200+ models
The same RouterBase key that calls the DeepSeek V4 Pro 0813 API also routes to GPT-5, Claude Opus 5, Gemini 3.5, and 200+ other models — no per-provider credentials.
Quickstart
Get started with the DeepSeek V4 Pro 0813 API in 3 steps
From sign-up to your first reproducible response in minutes.
Create a RouterBase API key
Sign up and generate an API key — one key reaches the DeepSeek V4 Pro 0813 API and every other model in the catalog.
Pin the model name
Point any OpenAI-compatible SDK at routerbase.com/v1 and set the model to deepseek-v4-pro-0813. Pinning the snapshot name is what keeps runs reproducible — streaming and function calling work out of the box.
Inspect usage
Every response includes a token breakdown — input, output, and cache-read tokens — so cost and cache-hit rate on the DeepSeek V4 Pro 0813 API are visible on every call.
Pay only for what you use
RouterBase passes through partner-tier pricing. Compared against the model's official published API rate.
What teams build on the DeepSeek V4 Pro 0813 API
Real production loads running on the DeepSeek V4 Pro 0813 API and the RouterBase catalog.
On our hardest coding tasks the DeepSeek V4 Pro 0813 API delivers, and pinning the snapshot keeps CI reproducible.
The DeepSeek V4 Pro 0813 API is where we route anything that has to be right — and stay right after the next model update.
Cached reads at $0.35 / 1M kept the DeepSeek V4 Pro 0813 API affordable across long agent runs.
One key gave us Flash for volume and the DeepSeek V4 Pro 0813 API, pinned, for the audit-stable path.
Our multi-step agents got steadier on the DeepSeek V4 Pro 0813 API, and the pinned build stopped surprise drift.
We reach for the DeepSeek V4 Pro 0813 API when reproducibility beats chasing the newest rolling weights.
Switching hard prompts to the DeepSeek V4 Pro 0813 API was one string, and the 0813 pin means the result stays put.
Function calling held up, so our agent stack runs the DeepSeek V4 Pro 0813 API on its toughest, must-be-stable steps.
Frequently Asked Questions
Common questions about the DeepSeek V4 Pro 0813 API.
It is RouterBase's pass-through to DeepSeek V4 Pro pinned at the 0813 snapshot — the flagship V4 Pro capability with a 1M-token context, reasoning, and function calling, frozen at one build so runs stay reproducible, served over an OpenAI-compatible endpoint.