Model comparison
GPT-5.5 vs Qwen 3.8 Max
OpenAI against Qwen, compared on context, price, and attributed benchmark results.
Recorded profile verification October 2, 2026Individual provider fields may changeEvidence confidence: Medium — see receipts below
OpenAI
GPT-5.5
Frontier
Qwen
Qwen 3.8 Max
Frontier
| Specification | GPT-5.5 | Qwen 3.8 Max |
|---|---|---|
| Provider | ||
| Provider | OpenAI | Qwen |
| Tier | ||
| Tier | Frontier | Frontier |
| Context window | ||
| Context window | Winner: 1.05M | 1M |
| Max output | ||
| Max output | 128K | Winner: 131K |
| Input / 1M tokens | ||
| Input / 1M tokens | $5 | Winner: $2 |
| Output / 1M tokens | ||
| Output / 1M tokens | $30 | Winner: $6 |
| Weights | ||
| Weights | Closed | Closed |
| Parameters | ||
| Parameters | Not verifiedUnverified | 2.4T total (MoE; managed active count not verified) |
| Reasoning levels | ||
| Reasoning levels | none, low, medium, high, xhigh | low, medium, xhigh |
| Modalities | ||
| Modalities | text, image | text, image, video |
| API model id | ||
| API model id | gpt-5.5 | qwen3.8-max |
| Released | ||
| Released | April 23, 2026 | August 3, 2026 |
| Terminal-Bench 2.1 · source date GPT-5.5: 2026-07-27 | ||
| Terminal-Bench 2.1 · source date GPT-5.5: 2026-07-27 | 83.4 | Not verifiedUnverified |
| Terminal-Bench 2.1 · source date Qwen 3.8 Max: 2026-10-01 | ||
| Terminal-Bench 2.1 · source date Qwen 3.8 Max: 2026-10-01 | Not verifiedUnverified | 86.6 |
| GPQA Diamond · source date GPT-5.5: 2026-07-27 | ||
| GPQA Diamond · source date GPT-5.5: 2026-07-27 | 93.5 | Not verifiedUnverified |
| GPQA Diamond · source date Qwen 3.8 Max: 2026-10-01 | ||
| GPQA Diamond · source date Qwen 3.8 Max: 2026-10-01 | Not verifiedUnverified | 92.6 |
| Humanity's Last Exam · source date GPT-5.5: 2026-04-23, Qwen 3.8 Max: 2026-08-14 (comparability not verified) | ||
| Humanity's Last Exam · source date GPT-5.5: 2026-04-23, Qwen 3.8 Max: 2026-08-14 (comparability not verified) | 52.2 | 56.2 |
| Artificial Analysis Intelligence Index · source date Qwen 3.8 Max: 2026-10-01 | ||
| Artificial Analysis Intelligence Index · source date Qwen 3.8 Max: 2026-10-01 | Not verifiedUnverified | 45 |
Dates beside benchmark scores refer to the linked source’s publication or capture date unless that source explicitly states when it measured the result. A shared URL alone does not establish comparable runs; unverified setups are marked. Prices are USD per million tokens at standard rates, excluding batch and caching discounts. Values we could not confirm from the provider are shown as “Not verified” rather than estimated.
Benchmark receipts
Where each score comes from, and how far it can be compared across models.
- Source date2026-10-01Qwen official checkpoint card reproducing the managed Max evaluation table (vendor) (Managed Qwen3.8-Max column; complete run configuration unverified)
Graduate-level science reasoning: multiple-choice questions written by domain PhDs.
Comparable with caveatDo not treat a fixed two-point band as universal measurement uncertainty; it depends on run count and evaluation setup. Chain-of-thought, prompt, and tool policy must match. The small pool limits fine-grained conclusions, and frontier scores can be near ceiling; Artificial Analysis dropped it from its Intelligence Index in v4.3.
- Source date2026-10-01Qwen official checkpoint card reproducing the managed Max evaluation table (vendor) (Managed Qwen3.8-Max column; Claude Code avg@10, 5-hour timeout, max_tokens 131,072; exact run date unverified)
Agentic terminal work: multi-step tasks executed in a sandboxed shell environment.
Comparable with caveatNot comparable with Terminal-Bench 3.0 or 4.0 (different task sets) or v1; harness configuration (container, time limits) also shifts results.
- Source date2026-10-01Artificial Analysis (Qwen3.8 Max (0902))
Composite index blending reasoning, knowledge, and coding evals into one 0–100 score.
Comparable with caveatOnly same-version scores are comparable. v4.3.2 was rebaselined (the top score fell from 66 on v4.1.1 to ~58), so v4.1.1 figures must not be compared with v4.3.2 figures — check the cited source and its date.
- Source date2026-08-14Z.ai GLM-5.3 vendor evaluation of Qwen3.8-Max, with tools; distinct from Qwen no-tools results
Frontier-knowledge ceiling: extremely hard multi-domain questions written to be near-impossible without deep expertise.
Comparable with caveatSubset/tool configurations (text-only vs with-tools) differ between vendors and materially change scores; must match configuration to compare.
- Source date2026-07-27Kimi K3 model card (vendor-reported, xhigh); announcement charts show 93.6 — minor conflict preserved
Graduate-level science reasoning: multiple-choice questions written by domain PhDs.
Comparable with caveatDo not treat a fixed two-point band as universal measurement uncertainty; it depends on run count and evaluation setup. Chain-of-thought, prompt, and tool policy must match. The small pool limits fine-grained conclusions, and frontier scores can be near ceiling; Artificial Analysis dropped it from its Intelligence Index in v4.3.
- Source date2026-07-27Kimi K3 model card (vendor-reported, xhigh, Codex harness; orig OpenAI)
Agentic terminal work: multi-step tasks executed in a sandboxed shell environment.
Comparable with caveatNot comparable with Terminal-Bench 3.0 or 4.0 (different task sets) or v1; harness configuration (container, time limits) also shifts results.
- Source date2026-04-23OpenAI — Introducing GPT-5.5 (vendor, with tools; 41.4 no tools)
Frontier-knowledge ceiling: extremely hard multi-domain questions written to be near-impossible without deep expertise.
Comparable with caveatSubset/tool configurations (text-only vs with-tools) differ between vendors and materially change scores; must match configuration to compare.
Pricing tiers
GPT-5.5: Standard $5/$30 per MTok; prompts above 272K bill 2x input and 1.5x output for the full session in Standard/Batch/Flex. Cached input $0.50; short-context Batch $2.50/$15. Regional/FedRAMP processing adds 10% where eligible.
Qwen 3.8 Max: Model Studio International $2/$6 per MTok; implicit cache $0.25, explicit creation $2.50/read $0.17. China/Global $1.65/$4.951, cache $0.206, creation $2.063/read $0.137. Output 131,072 in both modes; input 991,808 non-thinking or 983,616 thinking, 1M context and 262,144 reasoning. Batch supported in China, unavailable in International/Global.
GPT-5.5
OpenAI’s April 2026 model for reasoning, coding and professional work, with a 1.05M-token context. Retained benchmark scores identify their source and configuration.
Best for
- Reasoning
- Agentic coding
- Long-context work
Watch out
An older model, still listed in the API. GPT-5.5 retires from ChatGPT, Work and Codex on October 14, 2026; that notice does not affect the OpenAI API.
Qwen 3.8 Max
Qwen 3.8 Max is Alibaba's managed multimodal flagship, with a vendor-described 2.4T MoE scale and 1M context.
Best for
- Hosted agentic work
- Long-context
- Multimodal
Watch out
The text-only open checkpoint has 262,144 native context with extension and requires thinking; its 95B active count is not verified for the managed API. Managed Max accepts visual input and supports thinking on/off, xhigh default and low/medium/xhigh controls, with preserved thinking by default. API reasoning_effort and thinking_budget cannot both be set. Regional web-search and Batch support differ. Independent AA 0902 results identify a snapshot, not every alias version.
When the cheaper one wins
Qwen 3.8 Max is cheaper on output at $6 per million tokens against $30 for GPT-5.5 — about 5.0×. Use the cheaper tier for classification, extraction, summarisation, and any task where the expensive model’s extra score does not change the accepted output. The expensive one only pays if your hardest task actually fails on the cheap tier. On DeepSWE 1.1, Qwen 3.8 Max is 57.5% Pass@1 at $3.73/task versus GPT-5.5 at 67% / $7.23/task. This compares standard short-context token rates, not total cost per accepted task. Include input, cache, context tiers, schedules, retries and review in your pilot.
Run the model pickerEvidence confidence: Medium
How strong and complete the evidence behind this comparison is — not a prediction of which model is better.
- Pricing verified on both sides — Input and output rates are verified for both models.
- 4/5 core specs verified on both sides — Not published for at least one side: parameter count.
- No directly aligned benchmark setup — No benchmark has matching cited sources, source dates, units, effort and recorded run details on both models.
- Verified within the last 90 days — Older of the two catalog checks was 25 days ago.
- Both models carry source citations — Each side has at least two catalog sources on record.
Source receipts
Each catalog figure was checked against the provider or an independent second source on the date shown.
- GPT-5.5: ChatGPT/Work/Codex October 14 retirement — API unaffected (accessed 2026-10-01)
- GPT-5.5: OpenAI model card — whole-profile source check October 1 (accessed 2026-10-01)
- GPT-5.5: OpenAI current API pricing and processing tiers (accessed 2026-10-01)
- GPT-5.5: OpenAI — Introducing GPT-5.5 (accessed 2026-08-29)
- GPT-5.5: OpenAI API pricing (gpt-5.5 $5/$30) (accessed 2026-08-29)
- Qwen 3.8 Max: Dedicated exact capacities and regional pricing (accessed 2026-10-01)
- Qwen 3.8 Max: Exact effort and compatibility rules (accessed 2026-10-01)
- Qwen 3.8 Max: Current managed card and exact cache rates (accessed 2026-10-01)
- Qwen 3.8 Max: Current hosted thinking versus checkpoint mode (accessed 2026-10-01)
- Qwen 3.8 Max: Qwen — Qwen 3.8 Max (accessed 2026-08-29)
- Qwen 3.8 Max: Alibaba Cloud Model Studio (accessed 2026-08-29)
- Qwen 3.8 Max: Alibaba Cloud Model Studio — text generation models (1M ctx, 131,072 out) (accessed 2026-09-26)
- Qwen 3.8 Max: Qwen3.8-2.4T-A95B checkpoint card (distinguishes enhanced managed Max) (accessed 2026-10-01)
- Qwen 3.8 Max: QwenCloud managed Qwen3.8-Max model card (cache and mode-specific limits) (accessed 2026-10-01)
Related comparisons
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- Claude Fable 5 vs GPT-5.5
- Claude Fable 5 vs Qwen 3.8 Max
- Claude Mythos 5.1 vs GPT-5.5
- Claude Mythos 5.1 vs Qwen 3.8 Max
Diving deeper on one model? GPT-5.5 · Qwen 3.8 Max
Common questions
GPT-5.5 vs Qwen 3.8 Max
Answered from the verified figures on this page rather than general guidance.
Is GPT-5.5 or Qwen 3.8 Max cheaper for input?
Is GPT-5.5 or Qwen 3.8 Max cheaper for output?
Which has the larger context window, GPT-5.5 or Qwen 3.8 Max?
Do GPT-5.5 and Qwen 3.8 Max support the same reasoning levels?
Should I use GPT-5.5 or Qwen 3.8 Max?
Next step
Choosing between them
The verified figures that separate this pair, computed from the catalog rather than restated boilerplate.
- Input price: Qwen 3.8 Max costs $2 per 1M tokens versus $5 for GPT-5.5 — a 2.5x difference at the headline tier.
- Context: GPT-5.5 takes 1.05M against 1M for Qwen 3.8 Max — only decisive if your prompts approach the smaller window.
Choosing a harness rather than a model — Cursor, Copilot, Claude Code, Windsurf, or Lovable? Compare agentic harnesses · Latest releases.