Simple estimator
How much might this cost?
Pick a kind of work and how often you do it. We’ll show dollars for a normal session — not “$3/M in,” which most people shouldn’t have to decode.
GPT-6 Luna would be about $0.04 a month for this pattern. GPT-6 Astra would be about $4.10 — roughly 100× more.
Current models, base text API rates. Excludes tools, caching, and long-context surcharges. Gemini 3.8 Flash rates are promotional through December 31, 2026; DeepSeek uses peak, uncached rates. Copilot billing differs.
| Model | One run | This month | Cost level |
|---|---|---|---|
| GPT-6 LunaOpenAI · gpt-6-luna | less than a cent | $0.04 | Low |
| Qwen3.8 FlashAlibaba Cloud · qwen3.8-flash | less than a cent | $0.05 | Low |
| Mistral Small 4Mistral AI · mistral-small-2603 | less than a cent | $0.05 | Low |
| DeepSeek V4.1 FlashDeepSeek · deepseek-flash | < $0.01 | $0.11 | Low |
| Qwen3.7 PlusAlibaba Cloud · qwen3.7-plus | < $0.01 | $0.14 | Low |
| Gemini 3.5 Flash-LiteGoogle · gemini-3.5-flash-lite | < $0.01 | $0.17 | Low |
| Gemini 3.8 FlashGoogle · gemini-3.8-flash | $0.02 | $0.31 | Low |
| DeepSeek V4 ProDeepSeek · deepseek-v4-pro | $0.02 | $0.41 | Medium |
| Claude Haiku 4.5Anthropic · claude-haiku-4-5 | $0.02 | $0.41 | Low |
| Mistral Medium 3.5Mistral AI · mistral-medium-3-5 | $0.03 | $0.61 | Medium |
| Qwen3.8 MaxAlibaba Cloud · qwen3.8-max | $0.03 | $0.62 | Medium |
| Grok 4.7xAI · grok-4.7 | $0.03 | $0.62 | Medium |
| GPT-6 SolOpenAI · gpt-6-sol | $0.04 | $0.82 | Medium |
| Claude Sonnet 5Anthropic · claude-sonnet-5 | $0.04 | $0.82 | Medium |
| Gemini 3.1 Pro PreviewGoogle · gemini-3.1-pro-preview | $0.05 | $0.92 | Medium |
| Kimi K3Moonshot AI · kimi-k3 | $0.06 | $1.23 | Medium |
| Claude Opus 5.5Anthropic · claude-opus-5-5 | $0.08 | $1.64 | High |
| Claude Fable 5.1Anthropic · claude-fable-5-1 | $0.21 | $4.10 | High |
| GPT-6 AstraOpenAI · gpt-6-astra | $0.21 | $4.10 | High |