How much does an AI coding agent cost on Gemini 4 Argon?
Running a multi-step coding agent that reads files, calls tools and re-sends its growing context every step on Gemini 4 Argon costs about $31,672/month for 200 users × 10 tasks/day: that's $158 per user and $528 per 1,000 tasks.
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Assumptions
- 200 users × 10 tasks/day (60,000 per month)
- System prompt 6,000 tokens, retrieved context 8,000 tokens, user input 300, output 800 + 1,500 reasoning tokens
- Agent loop: 12 LLM calls per task, 2 tool call(s) per step at 1500 tokens each; context is re-sent every step
- Prompt cache hit rate 80%
- Gemini 4 Argon list price: $2/1M input, $10/1M output, $0.1/1M cached input; context window 1,048,576 tokens
How Gemini 4 Argon compares for an AI coding agent
6 of 11 other popular models are cheaper for this workload. Cheapest isn't always best: check the quality index, and consider routing easy requests to a cheap model and only hard ones to a frontier model.
| Model | Quality | Monthly | Per user |
|---|---|---|---|
| DeepSeek V4 Flash 0423 | 24.4 | $1,726 | $8.63 |
| Claude Haiku 5.5 | 43.4 | $2,313 | $11.57 |
| DeepSeek V4 Pro 0423 | 30.4 | $6,369 | $31.85 |
| Gemini 3.8 Flash | 40.9 | $13,760 | $68.80 |
| GPT-5.4 Mini | 24.1 | $17,581 | $87.91 |
| Grok 4.3 | 24.9 | $22,636 | $113 |
| Gemini 4 Argon | 52.6 | $31,672 | $158 |
| Grok 4.7 | 46.4 | $43,402 | $217 |
| GPT-6.1 Sol | 51.8 | $44,109 | $221 |
| Claude Sonnet 5.5 | 56 | $44,109 | $221 |
| Claude Opus 5.5 | 57.6 | $88,219 | $441 |
| GPT-5.5 | 38.4 | $117,209 | $586 |
More Gemini 4 Argon cost guides
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Prices: OpenRouter list prices (USD per 1M tokens), updated 2026-10-15. Estimates only; a month is 30 days. See how the math works.