Qwen3.5-122B-A10B vs Qwen3.5-397B-A17B
Qwen3.5-122B-A10B (2026) and Qwen3.5-397B-A17B (2026) are frontier-tier reasoning models from Alibaba. Both ship a 262k-token context window. On MMLU PRO, Qwen3.5-397B-A17B leads by 1.1 pts. On pricing, Qwen3.5-122B-A10B costs $0.26/1M input tokens versus $0.39/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads. It focuses on practical selection signals rather than broad model-family marketing.
Qwen3.5-122B-A10B is ~50% cheaper at $0.26/1M; pay for Qwen3.5-397B-A17B only for vision-heavy evaluation.
Decision scorecard
Local evidence first| Signal | Qwen3.5-122B-A10B | Qwen3.5-397B-A17B |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 262k | 262k |
| Cheapest output | $2.08/1M tokens | $2.34/1M tokens |
| Provider routes | 3 tracked | 4 tracked |
| Shared benchmarks | 8 shared | MMLU PRO leader |
Decision tradeoffs
- Qwen3.5-122B-A10B has the lower cheapest tracked output price at $2.08/1M tokens.
- Local decision data tags Qwen3.5-122B-A10B for Coding, RAG, and Agents.
- Qwen3.5-397B-A17B holds a shared-benchmark lead on MMLU PRO, ahead by 1.1 points.
- Qwen3.5-397B-A17B has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Qwen3.5-397B-A17B for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Qwen3.5-122B-A10B
$728
Cheapest tracked route/tier: OpenRouter
Qwen3.5-397B-A17B
$897
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $169. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter, Alibaba Cloud PAI-EAS, and Novita AI; start route-level A/B tests there.
- Qwen3.5-397B-A17B is $0.26/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Provider overlap exists on OpenRouter, Alibaba Cloud PAI-EAS, and Novita AI; start route-level A/B tests there.
- Qwen3.5-122B-A10B is $0.26/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-02-24 | 2026-02-16 |
| Context window | 262k | 262k |
| Parameters | 122B | 397B |
| Architecture | Mixture of Experts | Mixture of Experts |
| License | Apache 2.0OSI-approved | Apache 2.0OSI-approved |
| Openness | Open source | Open source |
| Weights | Available | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Qwen3.5-122B-A10B | Qwen3.5-397B-A17B |
|---|---|---|
| Input price | $0.26/1M tokens | $0.39/1M tokens |
| Output price | $2.08/1M tokens | $2.34/1M tokens |
| Providers |
Capabilities
| Capability | Qwen3.5-122B-A10B | Qwen3.5-397B-A17B |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-397B-A17B |
|---|---|---|
| MMLU PRO | 86.7 | 87.8 |
| SWE-bench Verified | 72.0 | 76.2 |
| Google-Proof Q&A | 85.7 | 89.3 |
| LiveCodeBench | 78.9 | 83.6 |
| Humanity's Last Exam | 25.3 | 28.7 |
| τ-bench | 79.5 | 86.7 |
| MultiChallenge | 61.5 | 67.6 |
| Berkeley Function Calling Leaderboard v3 | 72.2 | 72.9 |
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Popular comparisons for Qwen3.5-122B-A10B
Popular comparisons for Qwen3.5-397B-A17B
Last reviewed: 2026-10-09. Data sourced from public model cards and provider documentation.