DeepSeek V4 (Pro-Max / Flash-Max)
DeepSeek V4-series models including V4-Pro-Max and V4-Flash-Max for coding, reasoning, and agent workflows with competitive pricing.
DeepSeek V4 represents the next generation of DeepSeek’s model architecture, available in two main variants released in April 2026. V4-Pro-Max is optimized for complex reasoning and coding tasks requiring maximum capability, while V4-Flash-Max trades some reasoning depth for lower latency and higher throughput — suitable for real-time agent interactions and high-volume generation.
Both variants maintain the 128,000-token context window and OpenAI-compatible API style that made the V3 series popular, while improving vision capabilities and coding benchmarks. The V4 series competes directly with GPT-5.5, Claude Opus 4.7, and Gemini 3.1 Pro, offering a cost-efficient alternative for teams already invested in the OpenAI-compatible ecosystem.
For production deployments, the choice between Pro-Max and Flash-Max depends on workload characteristics: Pro-Max for complex reasoning and code generation where quality is paramount, Flash-Max for latency-sensitive applications and high-throughput scenarios where good-but-not-maximum quality is acceptable. Both variants support tool calling and MCP bridges through standard OpenAI-compatible client patterns. Source code and model weights are available on DeepSeek’s GitHub.
| Provider | DeepSeek |
|---|---|
| Context Window | 128000 |
| Pricing | V4-Pro-Max and V4-Flash-Max have separate pricing tiers. Verify exact pricing in official DeepSeek documentation and provider dashboards. |
| API Style | OpenAI-compatible API style |
| SDK | OpenAI compatible SDK, custom HTTP client |
| MCP | Works through Agent runtimes that support tool calling and MCP bridges. |
| Agent | Suitable for coding agents, documentation agents, and retrieval-assisted workflows. |
| RAG | Good candidate for RAG answer generation when source citations are enforced. |
| Source Freshness | recently_verified |
| Version Status | current |
| Version Boundary | DeepSeek V4 variants released in April 2026: V4-Pro-Max (higher reasoning for complex tasks) and V4-Flash-Max (optimized for speed/latency). Both maintain 128K-token context and OpenAI-compatible API. DeepSeek-V3.2 (December 2025) is the latest V3-series reasoning model with lower pricing. |
Key Facts
- DeepSeek V4 includes two main variants: Pro-Max (higher reasoning) and Flash-Max (lower latency).
- Both variants support OpenAI-compatible API, tool calling, and MCP bridges.
- 128K-token context window for extended reasoning and code tasks.
- DeepSeek V4 variants were released in April 2026 alongside GPT-5.5 launch window.
Best For
Not Ideal For
Capability Matrix
| Capability | Status |
|---|---|
| Coding | Very Strong |
| Tool Use | Supported |
| Reasoning | Strong |
| Vision | Supported |
SEO
| SEO Title | DeepSeek V4 (Pro-Max / Flash-Max) API, Pricing, SDK, MCP & Agent Compatibility |
|---|---|
| Description | DeepSeek V4 (Pro-Max / Flash-Max) by DeepSeek: DeepSeek V4-series models including V4-Pro-Max and V4-Flash-Max for coding, reasoning, and agent workflows with competitive pricing. |
| Canonical | /model/deepseek-v4 |
| Updated | 2026-05-21 |
Related Pages
- AI Model Directory
- Compatibility Matrix
- FAQ Index
- Best AI Models for Agent Workflows
- Best AI Models for Code Review
- Best AI Models for Coding
- Best AI Models for Cost-Sensitive Generation
- Best AI Models for Low-Latency Generation
- Best AI Models for Open-Weight Deployment
- Best AI Models for OpenAI-Compatible Integration
- DeepSeek V4 (Pro-Max / Flash-Max) vs Claude Sonnet 4.6
- DeepSeek V4 (Pro-Max / Flash-Max) vs Gemini Pro
- DeepSeek V4 (Pro-Max / Flash-Max) vs GPT-5.5
- DeepSeek V4 (Pro-Max / Flash-Max) vs Qwen3.6
Compare
| Comparison | Compared With |
|---|---|
| DeepSeek V4 (Pro-Max / Flash-Max) vs Claude Sonnet 4.6 | Claude Sonnet 4.6 |
| DeepSeek V4 (Pro-Max / Flash-Max) vs Gemini Pro | Gemini Pro |
| DeepSeek V4 (Pro-Max / Flash-Max) vs GPT-5.5 | GPT-5.5 |
| DeepSeek V4 (Pro-Max / Flash-Max) vs Qwen3.6 | Qwen3.6 |
Compatibility Facts
| Layer | Target | Status | Evidence | Updated |
|---|---|---|---|---|
| sdk | openai-compatible-sdk | verify_required | DeepSeek V4 uses an OpenAI-compatible API style in the model entry and links to DeepSeek official API documentation. | 2026-05-18 |
FAQ
| What is DeepSeek V4 (Pro-Max / Flash-Max)? | DeepSeek V4 is available as V4-Pro-Max and V4-Flash-Max for coding, reasoning, and agent workflows. Both offer 128K context and OpenAI-compatible APIs. Verify exact pricing, variant availability, and capability differences in official DeepSeek documentation. |
|---|---|
| What is DeepSeek V4 (Pro-Max / Flash-Max) best for? | DeepSeek V4 (Pro-Max / Flash-Max) is best for coding, agent workflow, cost-sensitive generation. |
| How should DeepSeek V4 (Pro-Max / Flash-Max) be verified before production use? | Check current pricing, availability, limits, and API behavior against the listed official and GitHub sources. This entry was updated on 2026-05-21. |
| How should Agent workflow compatibility be evaluated? | Agent workflow compatibility should be evaluated from API style, SDK support, tool-use notes, compatibility facts, and relationship edges rather than a single marketing label. |
| How should open-weight models be compared with hosted API models? | Compare open-weight models by checkpoint, license, serving framework, hardware cost, context behavior, and adapter compatibility instead of treating them as direct one-to-one hosted API replacements. |
| How should pricing be handled when model prices change frequently? | Use nullable price fields or explicit pricing notes unless pricing is verified against official provider documentation, then update sourceFreshness and lastVerified together. |
| When should an OpenAI-compatible SDK path be preferred? | An OpenAI-compatible SDK path is useful when a team already has OpenAI-style clients or Agent runtimes, but provider-specific behavior must still be verified. |
Relationship Facts
| Source | Type | Target | Confidence |
|---|---|---|---|
| deepseek-v4 | best_for | agent-workflow | 0.72 |
| deepseek-v4 | best_for | coding | 0.74 |
| deepseek-v4 | works_with | openai-compatible-sdk | 0.72 |
Sources
| Name | Type | Citation | Last Verified |
|---|---|---|---|
| DeepSeek API Documentation | docs | Official DeepSeek API documentation is the primary source for API compatibility and V4 variant notes. | 2026-05-21 |
| DeepSeek GitHub | github | GitHub model-family reference for DeepSeek open model materials; API behavior should still be verified in official docs. | 2026-05-21 |
External Resources
- DeepSeek API Documentation — Official DeepSeek API documentation is the primary source for API compatibility and V4 variant notes.
- DeepSeek GitHub — GitHub model-family reference for DeepSeek open model materials; API behavior should still be verified in official docs.