AI coding prices got stupid this week.

| Model | Input | Output |
|---|---|---|
| Muse Spark 1.2 Contributor | $0.10 | $0.20 |
| DeepSeek V4 Flash | $0.14 | $0.28 |
| GPT-5.6 Luna | $0.20 | $1.20 |
| Luna via OpenRouter (50% off) | $0.10 | $0.60 |
Prices are per million tokens.
Muse Contributor is the cheapest of the bunch. Ten million input tokens and two million output tokens cost $1.40. The trade is permission for Meta to train on your prompts and completions, so I would keep work code far away from it.
DeepSeek V4 Flash is nearly as cheap without needing a special contributor tier, and its cached input price is a frankly stupid $0.0028 per million tokens.
Luna then went from cheap to silly. OpenAI dropped the direct API price to $0.20/$1.20, and OpenRouter is temporarily selling it at another 50% off ($0.10/$0.60).
Subscriptions are getting dragged into the fight too. OpenCode Go is $5 for the first month and $10/month after that, with Luna currently getting 2x usage limits.
Luna is still king for me, though.
By my rough usage-limit math, Luna Max on the $20 ChatGPT Plus plan works out to around 1.5 billion tokens a week. The exact number depends on how credits are counted, but the allowance is large enough that I have stopped thinking about individual requests. Max reasoning when I need it, fast mode almost everywhere else.
This is basically TPS over Quality again, except the cheap fast model is now also very good.
ChatGPT Plus. Luna Max. Fast mode. That is all I need.
Begun, the price wars have.







