Gemini 3.5 Flash: Cheapest Coding Model Per Task?
Gemini 3.5 Flash lists at $1.50/$9.00 per million tokens: about 2x Haiku per token, yet roughly 3x cheaper per task than GPT-5.5 on agentic coding work.
Software that builds software
The model matters. The harness, workflow and economics around it often matter more.
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Guides to AI coding agents, harness engineering, workflows, editors and the economics around them.
Gemini 3.5 Flash lists at $1.50/$9.00 per million tokens: about 2x Haiku per token, yet roughly 3x cheaper per task than GPT-5.5 on agentic coding work.
A cost-first guide to building an AI agent harness: loop, context, tools, verification, and guardrails, and the token cost each layer controls.
Microsoft calls MAI-Code-1-Flash its cheapest coding model. In Copilot it bills like Claude Haiku 4.5 (0.33x); its token edge holds only on easy benchmarks.
Qwen 3.7 Max lists at half Claude Opus 4.8 and runs the same eval suite for a third of the cost. The catch is not hidden cost. It is what the price buys.
Codex leads Claude Code 83.4% to 78.9% on Terminal-Bench 2.1, but the prices match and the cheaper agent flips with your harness. The honest scorecard.
Composer 2.5 finishes a coding task for about $0.07, 10-60x under Claude Opus and GPT-5.5 at near-equal benchmark scores. What the cheap headline leaves out.
An independent replay of 500 Claude Code sessions found rtk, headroom, and caveman cut a $926 bill by just 3.7 percent. Here is why the 60-90% claims miss.
AI agent benchmarks broke in 2026: reward-hacked to 100%, SWE-bench Verified retired, scores swung by harness choice. What each measures and which to trust.
GitHub Copilot switched to usage-based AI Credits on June 1, 2026. What the $10 Pro plan really costs once metering kicks in, and whether it is still worth it.