System prompt reports wrong context window for DeepSeek-V4-Pro (262K instead of 1M)

[LordPadas]

Description

When using deepseek-v4-pro, the system prompt tells the model it has a 262K token context window, but the actual model supports 1M tokens (per https://api-docs.deepseek.com/quick_start/pricing).

Plugins

No response

OpenCode version

1.3.0

Steps to reproduce

1. Configure deepseek-v4-pro as the provider
2. Ask the model about its context window
3. It responds with "262K tokens"

Screenshot and/or share link

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Operating System

Windows

Terminal

No response