LLMOps · AI cost optimization
A $200 Claude subscription gives me ~$3,850/month of frontier-model value.
But I can’t run my product on it — and that one distinction is the most expensive thing teams get wrong about AI costs right now. Here’s the math from costing out Erosolar, my agentic research assistant that pairs live web search with an LLM.
Your dev seat — you, building
A flat-rate subscription is unbeatable for personal coding. Claude Max 20× at $200/mo delivers ~$3,850 of Opus 4.8 API value at a heavy ~1B tokens/month — roughly a 19× effective discount. But a subscription can’t serve your users.
Your product runtime — serving real traffic
Here you pay metered API, and the math flips. The frontier is worth paying for — just not for every token. The cheap, capable stack does the default work; you escalate to the frontier only where it earns its cost.
Dev-seat subscriptions (flat rate)
List prices as of June 2026 — verify current pricing before relying on these.
| Subscription | Price | What you get |
|---|---|---|
| Claude Max 20× | $200/mo | ~1B Opus 4.8 tokens/mo — ~$3,850 of API value (~19× effective discount) · Bo’s costed figure |
| ChatGPT Pro | $200/mo | High/Pro-tier limits on the GPT-5 / o-series models |
| Google AI Ultra (Gemini) | $249.99/mo | Gemini 3 Ultra with the highest consumer limits |
| SuperGrok Heavy | $300/mo | Grok 4 Heavy (“SuperCode”) with heavy limits |
Product-runtime API (metered, per 1M tokens)
| Model | Input | Output | Relative |
|---|---|---|---|
| Fable 5 (Anthropic top tier) | $10.00 | $50.00 | 44× DeepSeek |
| Opus 4.8 | $5.00 | $25.00 | 22× DeepSeek |
| DeepSeek V4-Pro | $0.435 | $0.87 | baseline (1×) |
DeepSeek V4-Pro is ~22× cheaper than Opus 4.8 and ~44× cheaper than Fable 5.
Same workload, with Tavily search attached
| Stack | Monthly |
|---|---|
| Opus 4.8 + Tavily | ≈ $3,970/mo |
| DeepSeek V4-Pro + Tavily | ≈ $297/mo |
The twist nobody talks about
Once your tokens are that cheap, the search layer becomes ~40% of the bill. The thing to optimize stops being the model and becomes search: cache results, drop unnecessary “advanced” calls, or self-host (SearXNG).
⏱ Time-sensitive
Fable 5 is free on Claude subscriptions only through June 22, then it converts to API-rate credits — and it burns plan allowance ~2× faster than Opus. Evaluate it now; don’t architect on it.
The takeaway — tiered routing wins
- Default traffic → cheap, capable stack (DeepSeek + Tavily).
- Hardest long-horizon tasks → escalate to Opus / Fable selectively, cap tokens, cache hard.
- Your own dev seat → the flat-rate subscription.
This site runs exactly that architecture — DeepSeek V4-Pro by default, selectable escalation to Opus 4.8 / Grok / Gemini, a hard monthly spend cap, and Tavily gated to only the calls that need it. See it on the models page and compare models live.
— Bo Shang · bo@shang.software · Erosolar.org