Head to head
vs QW For light moderate heavy
Verdict · measured basis
GPT-5.6 Terra costs $4.50 per solved task against
Qwen3.8 Max at $5.30 — ▼ 1.2x cheaper .
Over 200 tasks that is $159 a month.
On output token price alone Qwen3.8 Max looks 2.0x cheaper. The ranking reverses once you divide by pass rate — the cheaper tokens do not win the task.
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Verified pricing, pass rate and cost per solved task for GPT-5.6 Terra and Qwen3.8 Max Figure GPT-5.6 Terra Qwen3.8 Max Input $/Mtok $2 $2 Output $/Mtok $12 $6 Cached input $/Mtok $0.2 $0.25 Pass rate 60% 61% Cost per solved task $4.50 measured $5.30 measured Cost per month $900 $1.1k
Cost per month against tasks per month · drag the marker
Monthly cost against tasks per month Log-log lines for GPT-5.6 Terra (measured, $4.50 per solved task), Qwen3.8 Max (measured, $5.30 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $100 $1k $10k $100k TASKS / MONTH (log) → 200 tasks GPT-5.6 Terra · MEASURED · $4.50 per solved task $900 GPT-5.6 Terra MEASURED Qwen3.8 Max · MEASURED · $5.30 per solved task $1.1k Qwen3.8 Max MEASURED Monthly cost against tasks per month Log-log lines for GPT-5.6 Terra (measured, $4.50 per solved task), Qwen3.8 Max (measured, $5.30 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks. 10 100 1k 10k 100k $100 $1k $10k $100k TASKS / MONTH (log) → 200 tasks GPT-5.6 Terra · MEASURED · $4.50 per solved task $900 Qwen3.8 Max · MEASURED · $5.30 per solved task $1.1k — GPT-5.6 Terra · MEASURED — Qwen3.8 Max · MEASURED Solid measured · dashed modeled · dotted stale. The gap is the verdict.
Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings