AI coding agent costs vary 63x by model, output tokens drive price

A new analysis reveals that the cost of running AI coding agents can vary dramatically based on the chosen language model, with a single developer's workload potentially costing between $19 and $1,200 per month. The analysis highlights that output tokens are the primary cost driver for coding agents, accounting for a significant portion of the bill due to their token-hungry nature. While specialized coding models exist, general-purpose smaller models like Qwen3.5-Flash and DeepSeek-V4-Flash are currently the most cost-effective options, despite not being explicitly branded for coding. AI

IMPACT Cost-effective model selection is critical for AI coding agents, with output token pricing being the main driver of expenses.

RANK_REASON Analysis of pricing for AI models used in coding agents.

Read on dev.to — LLM tag →

• AI Model Watch
• Claude Sonnet 5
• Codestral
• DeepSeek-V4-Flash
• GPT-5.6 Sol
• Kimi K2 Code
• Opus 4.8
• Qwen3.5-Flash

• product
• infra

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