DeepSeek
Best Overall
V4 Flash 0731 on OpenRouter, with long-context text workflows and hosting limits distinct from newer direct API aliases.
At a glance
API model ID: deepseek/deepseek-v4-flash-0731
Capabilities & boundaries
Tool support requires the appropriate API integration; a supported tool is not automatically active in every chat.
The listing supports reasoning, but this guide does not assert one default or effort mapping across all hosting providers. Inspect the selected endpoint's accepted parameters; do not transplant V4.1 Flash's direct-API controls into this older routed version.
Put it to work
Original examples from EZ Ai Assist. Adapt these to your task and the features available in your workspace.
Workflow 01
Make a repository review manageable and verifiable.
Review the code change and acceptance criteria I provide in two passes: first map affected interfaces and risks, then inspect only the highest-risk paths. Cite file names and concrete evidence for each finding. Separate confirmed bugs from questions, propose minimal fixes, and list tests without claiming to have run them.
Workflow 02
Evaluate a pinned older model against a candidate replacement.
Compare these anonymized outputs from two model versions against the same rubric. Score factual support, instruction following, completeness and unnecessary changes. Quote the evidence behind each score, record ties, and identify cases requiring a human decision. Do not infer the provider or choose a winner based on the model name.
Workflow 03
Check the difference between a model name and its serving route.
Using the supplied integration configuration and provider notices, create a migration checklist for a legacy model alias. Identify where IDs are stored, what must be pinned, which parameters require retesting and how to detect fallback changes. Include a small regression suite and rollback criteria. Mark anything not established by the evidence as unknown.
Developer reference
These are named-provider OpenRouter reference prices, not EZ Ai Assist subscription prices.
View EZ Ai Assist plans| Token type | Price |
|---|---|
| Input | $0.0157 |
| Output | $1.28 |
Common questions
The OpenRouter V4 Flash 0731 listing supplied for this guide. It is a versioned model reference, not a claim that the old deepseek-v4-flash direct-API alias still serves those weights.
The retirement notice concerns DeepSeek's direct API, where old Flash IDs temporarily route to V4.1 Flash. Other hosts can serve different versions. Check the actual route rather than applying one provider's lifecycle notice globally.
A model-level aggregate limit is not enough to establish the maximum completion length of a selected provider endpoint. This guide keeps that distinction instead of presenting the old 384K figure as a universal hosted limit.
No. This text-focused 0731 guide is separate from the Vision experimental variant and V4.1 Flash. Use a verified vision-capable model and endpoint for screenshots or image analysis.
No. The table names one serving route, Relace. OpenRouter lists other providers with different rates and capabilities; inspect your routing choice before comparing costs.
Use the same representative tasks and score the results blind where practical. Record latency, billed usage, host and model version. Check failure cases and tool behavior, not only a single impressive answer.
No. Prompts describe tasks; tools require an available integration and appropriate permissions. Verify model access and tool controls in your app workspace before relying on them.
Check the source
Specifications and API prices checked on . Example prompts and workflow advice are editorial guidance from EZ Ai Assist.
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