Gemini 3 Pro vs Qwen3.5-397B-A17B
Gemini 3 Pro (2025) and Qwen3.5-397B-A17B (2026) are frontier reasoning models from Google DeepMind and Alibaba. Gemini 3 Pro ships a 1m-token context window, while Qwen3.5-397B-A17B ships a 262k-token context window. On MMLU PRO, Gemini 3 Pro leads by 4 pts. On pricing, Qwen3.5-397B-A17B costs $0.39/1M input tokens versus $1.25/1M 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.
Qwen3.5-397B-A17B is ~221% cheaper at $0.39/1M; pay for Gemini 3 Pro only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Gemini 3 Pro | Qwen3.5-397B-A17B |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and long-context analysis | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 1m | 262k |
| Cheapest output | $5/1M tokens | $2.34/1M tokens |
| Provider routes | 2 tracked | 4 tracked |
| Shared benchmarks | MMLU PRO leader | 5 shared |
Decision tradeoffs
- Gemini 3 Pro holds a shared-benchmark lead on MMLU PRO, ahead by 4 points.
- Gemini 3 Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 3 Pro uniquely exposes Code execution in local model data.
- Local decision data tags Gemini 3 Pro for Coding, RAG, and Agents.
- Qwen3.5-397B-A17B holds a shared-benchmark lead on Massive Multi-discipline Multimodal Understanding, ahead by 4 points.
- Qwen3.5-397B-A17B has the lower cheapest tracked output price at $2.34/1M tokens.
- Qwen3.5-397B-A17B has broader tracked provider coverage for fallback and route flexibility.
- Qwen3.5-397B-A17B uniquely exposes Reasoning and Structured outputs in local model data.
- 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.
Gemini 3 Pro
$2,250
Cheapest tracked route/tier: GCP Vertex AI
Qwen3.5-397B-A17B
$897
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $1,353. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Gemini 3 Pro and Qwen3.5-397B-A17B; plan for SDK, billing, or endpoint changes.
- Qwen3.5-397B-A17B is $2.66/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Code execution before moving production traffic.
- Qwen3.5-397B-A17B adds Reasoning and Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Qwen3.5-397B-A17B and Gemini 3 Pro; plan for SDK, billing, or endpoint changes.
- Gemini 3 Pro is $2.66/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Reasoning and Structured outputs before moving production traffic.
- Gemini 3 Pro adds Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-11 | 2026-02-16 |
| Context window | 1m | 262k |
| Parameters | — | 397B |
| Architecture | Decoder Only | Mixture of Experts |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Weights | Not released | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | 2025-01 | - |
Pricing and availability
| Pricing attribute | Gemini 3 Pro | Qwen3.5-397B-A17B |
|---|---|---|
| Input price | $1.25/1M tokens | $0.39/1M tokens |
| Output price | $5/1M tokens | $2.34/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 3 Pro | Qwen3.5-397B-A17B |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | No | Yes |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Gemini 3 Pro | Qwen3.5-397B-A17B |
|---|---|---|
| MMLU PRO | 91.8 | 87.8 |
| SWE-bench Verified | 76.2 | 76.2 |
| Google-Proof Q&A | 91.9 | 89.3 |
| Massive Multi-discipline Multimodal Understanding | 81.0 | 85.0 |
| BFCL | 72.5 | 72.9 |
Continue comparing
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Last reviewed: 2026-09-21. Data sourced from public model cards and provider documentation.