⚠️ Important Notice: Starting August 17, 2026, DeepSeek officially raised its API pricing and introduced peak/off-peak pricing tiers. Although OpenCode stated they would maintain low rates, upstream costs mean DeepSeek V4 Flash on OpenCode Go is no longer in a 'practically free / unlimited usage' state. Its uncached unit cost is now slightly higher than GPT-5.6 Luna at its current 50% discount. This guide is here to keep our community informed: OpenCode Go remains one of the most cost-effective subscriptions on the market, but developers must manage token spending and context windows mindfully. We will update this post immediately if pricing or subsidies change.
📊 1. What Happened? DeepSeek Price Hike & OpenCode Realities
1. DeepSeek Introduces Peak & Off-Peak Pricing
To handle surging concurrency and computational strain, DeepSeek implemented dynamic peak/off-peak pricing:
- Peak Hours (09:00–12:00 & 14:00–18:00 UTC+8): Significant price increase. DeepSeek-V4-Flash uncached input rose to ¥3.0 / 1M tokens and output to ¥9.0 / 1M tokens. Flagship DeepSeek-V4-Pro experienced an even sharper increase.
- Off-Peak Hours (Non-business hours): 50% discount applies (Flash uncached input at ¥1.5 / 1M, output at ¥4.5 / 1M).
- Context Caching Discount: Cached prompts remain ultra-cheap at ¥0.05 ~ ¥0.1 / 1M tokens.
2. OpenCode's Position & Real Impact on OpenCode Go
OpenCode is committed to supporting developers with affordable AI tooling. However, under current conditions:
- Large-scale full subsidies are not yet ready: Due to upstream costs, the internal token exchange rate for
deepseek-v4-flashon OpenCode Go has been adjusted upward. - No longer 'carefree unlimited': Previously, a $60 monthly quota pool was virtually impossible to exhaust; now, intensive multi-file agent workflows and peak-hour runs will consume quotas visibly faster.
3. Price Inversion: GPT-5.6 Luna (50% Off Promo)
OpenAI's lightweight agent model GPT-5.6 Luna is currently on a 50% discount (approx. $0.20 / 1M input tokens). Under current exchange rates:
- In uncached scenarios, GPT-5.6 Luna is actually cheaper than DeepSeek-V4-Flash during peak hours!
- This gives developers a competitive alternative for everyday lightweight completions.
🔍 2. Side-by-Side Comparison of Top 3 Cost-Effective Options
Option 1: OpenCode Go (Primary: DeepSeek V4 Flash)
- Cost Reference: $5 for the first month (renewals at $10/month), granting access to a $60/month dynamic quota pool.
- Key Strengths: 6x to 12x quota amplification leverage; exceptional coding comprehension; native Context Caching support; OpenAI API compatibility.
- Caveats & Advice: Avoid unbounded multi-file brute force scans; keep sessions active to maximize caching benefits.
Option 2: GPT-5.6 Luna (OpenAI 50% Off Promo)
- Cost Reference: 50% discount promo: Input ~$0.20 / 1M tokens, Output ~$0.80 / 1M tokens.
- Key Strengths: Ultra-fast latency and high throughput; superb English and general code generation; lower uncached unit cost than peak DeepSeek.
- Caveats & Advice: Slightly less specialized on complex multilingual reasoning compared to DeepSeek; watch for price updates once the promo ends.
Option 3: DeepSeek V4 Flash (Direct Official API)
- Cost Reference: Peak input ¥3.0 / 1M, output ¥9.0 / 1M; Off-peak 50% off (input ¥1.5 / 1M, output ¥4.5 / 1M).
- Key Strengths: Direct first-party connection with minimal routing latency; cached input is as low as ¥0.05 / 1M.
- Caveats & Advice: High peak-hour expenses; lacks the monthly multiplier leverage provided by subscriptions.
🚨 3. The Golden Rule: Never Switch Models Mid-Session!
This is the number one money-wasting mistake developers make:
⚠️ CRITICAL WARNING: Never switch AI models or providers back and forth in an ongoing conversation or project session!
Why does model switching burn money?
1. Caches are NOT shared across providers: Context Caching on DeepSeek, OpenAI, and Claude are completely separate systems. 2. Every switch incurs full-price input costs: If you have 50,000 tokens of accumulated chat and code history, continuing with DeepSeek costs virtually pennies via 1/30 cached rates. If you switch to GPT-5.6 Luna mid-session, OpenAI has zero cached context for that history and will bill all 50,000 tokens at full uncached rates! 3. The Best Practice:
- Lock one model per task: Keep using your chosen model for the entire duration of a task session.
- Switch only on new standalone tasks: When starting a fresh project or clean chat with zero prior context, choose the best model for that specific workload.
💡 4. Practical Quota-Saving Tips for Developers
OpenCode Go remains an unbeatable deal when used smartly:
1. Leverage Context Caching
DeepSeek's cached rates are 1/30th of uncached rates:
- In Cursor, Claude Code, Aider, or VSCode, reuse active sessions instead of constantly restarting conversations.
- Avoid stuffing hundreds of unreferenced dependencies into your prompts.
2. Schedule Bulk Refactoring for Off-Peak Hours
Run batch unit test generations, whole-repo migrations, and automated code reviews during off-peak windows (after 18:00 or between 12:00–14:00 UTC+8).
3. Route by Task Context
- Quick scripts / syntax fixes / JSON parsing: Start a fresh session with GPT-5.6 Luna for low cost and instant replies.
- Complex system refactoring / deep code reasoning: Start a dedicated session with DeepSeek-V4-Flash and keep the session locked to maximize caching.
❓ 5. Frequently Asked Questions (FAQ)
Q1: Should I still subscribe to OpenCode Go?
Answer: Yes, absolutely. Getting a $60 compute pool for $5 in your first month is an incredible 12x multiplier. Normal developer usage with proper caching will comfortably fit within the quota.
Q2: Will prices drop again in the future?
Answer: We are tracking this closely. The AI compute market is fast-moving. As OpenCode negotiates new upstream capacity and subsidies, we will publish updates immediately.