COMPARISON · VERIFIED 11 JUL 2026

Claude vs GPT vs Gemini: which is actually cheapest?

The honest answer is "it depends which tier you're comparing" — and most head-to-head posts pick one model from each provider without saying why that one. Here's the comparison broken out by tier, so you can compare like for like instead of a cherry-picked flagship-vs-budget matchup.

Budget tier

At the budget tier, OpenAI and Google are priced identically and both undercut Anthropic's Haiku by a wide margin. If your workload is simple classification, extraction, or high-volume low-stakes generation, GPT-4o mini or Gemini 2.5 Flash are the cheaper starting point — the quality gap on straightforward tasks is usually smaller than the price gap.

Mid tier

This is where most production workloads actually live, and the gap narrows. Claude Sonnet 5 is at introductory pricing through 31 August 2026, after which it moves to $3/$15 — worth factoring in if you're budgeting past that date. Gemini 3 Flash remains the clear value pick if your task doesn't need the extra reasoning quality Sonnet and GPT-4o are priced for.

Flagship tier

Gemini 3.1 Pro undercuts both Opus 4.8 and GPT-5.5 on paper while offering the largest context window of the three (2M tokens). Opus and GPT-5.5 sit close together on input price, with GPT-5.5 slightly more expensive on output. At this tier, the decision is rarely about the token price alone — it's about which model's reasoning style fits your specific task, since the cost difference on most real workloads is smaller than the headline per-token gap suggests.

The number that actually matters: your workload, not the rate card

A flagship model that gets a task right in one pass can be cheaper in practice than a budget model that needs three retries and a longer prompt to get there. Use the calculator with your own rough input/output split before assuming the cheapest per-token rate is the cheapest actual bill.

* Claude Sonnet 5 pricing shown is introductory through 31 Aug 2026; standard $3.00/$15.00 pricing applies from 1 Sep 2026. All prices verified against official provider documentation, 11 July 2026 — see full methodology.