o3 vs Qwen3.6-35B-A3B
o3 (2025) and Qwen3.6-35B-A3B (2026) compare a standalone API model against a coding-specialized model. o3 ships a 200k-token context window, while Qwen3.6-35B-A3B ships a 262k-token context window. On SWE-bench Verified, Qwen3.6-35B-A3B leads by 1.7 pts. On pricing, Qwen3.6-35B-A3B costs $0.15/1M input tokens versus $2/1M for the alternative. This page treats the result as workflow and deployment fit, not a universal model winner.
Treat this as a product-type comparison: o3 is standalone API model, while Qwen3.6-35B-A3B is coding-specialized model. Choose based on workflow fit before reading any benchmark or price row as decisive.
Decision scorecard
Local evidence first| Signal | o3 | Qwen3.6-35B-A3B |
|---|---|---|
| Product type | Standalone API model | Coding-specialized model |
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | custom coding agents, code generation, and tool loops |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 200k | 262k |
| Cheapest output | $8/1M tokens | $1/1M tokens |
| Provider routes | 3 tracked | 2 tracked |
| Shared benchmarks | 5 rows | SWE-bench Verified leader |
Decision tradeoffs
- o3 holds a shared-benchmark lead on Google-Proof Q&A, ahead by 1.7 points.
- o3 has broader tracked provider coverage for fallback and procurement flexibility.
- o3 uniquely exposes Reasoning, Structured outputs, and Code execution in local model data.
- Local decision data tags o3 for Coding, RAG, and Agents.
- Qwen3.6-35B-A3B holds a shared-benchmark lead on SWE-bench Verified, ahead by 1.7 points.
- Qwen3.6-35B-A3B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Qwen3.6-35B-A3B has the lower cheapest tracked output price at $1/1M tokens.
- Local decision data tags Qwen3.6-35B-A3B 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.
o3
$3,600
Cheapest tracked route/tier: OpenAI API
Qwen3.6-35B-A3B
$370
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $3,230. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Qwen3.6-35B-A3B is $7/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning, Structured outputs, and Code execution before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- o3 is $7/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- o3 adds Reasoning, Structured outputs, and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-04-16 | 2026-04-16 |
| Context window | 200k | 262k |
| Parameters | — | 35B |
| Architecture | decoder only | moe |
| License | Proprietary | Apache 2.0(OSI) |
| Openness | Proprietary | Open source |
| Commercial use | Commercial use with conditions | Commercial use allowed |
| Knowledge cutoff | 2024-06 | - |
Pricing and availability
| Pricing attribute | o3 | Qwen3.6-35B-A3B |
|---|---|---|
| Input price | $2/1M tokens | $0.15/1M tokens |
| Output price | $8/1M tokens | $1/1M tokens |
| Providers |
Capabilities
| Capability | o3 | Qwen3.6-35B-A3B |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | o3 | Qwen3.6-35B-A3B |
|---|---|---|
| SWE-bench Verified | 71.7 | 73.4 |
| Google-Proof Q&A | 87.7 | 86.0 |
| LiveCodeBench | 85.5 | 80.4 |
| MMMU Pro | 76.4 | 75.3 |
| MathVista | 86.8 | 86.4 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has o3 at 71.7 and Qwen3.6-35B-A3B at 73.4, with Qwen3.6-35B-A3B ahead by 1.7 points; Google-Proof Q&A has o3 at 87.7 and Qwen3.6-35B-A3B at 86, with o3 ahead by 1.7 points; LiveCodeBench has o3 at 85.5 and Qwen3.6-35B-A3B at 80.4, with o3 ahead by 5.1 points. The largest visible gap is 5.1 points on LiveCodeBench, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on reasoning mode: o3, structured outputs: o3, and code execution: o3. Both models share vision, multimodal input, function calling, and tool use, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, o3 lists $2/1M input and $8/1M output tokens on the cheapest tracked provider, while Qwen3.6-35B-A3B lists $0.15/1M input and $1/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Qwen3.6-35B-A3B lower by about $3.40 per million blended tokens. Availability is 3 providers versus 2, so concentration risk also matters.
Choose o3 when coding workflow support and broader provider choice are central to the workload. Choose Qwen3.6-35B-A3B when coding workflow support, larger context windows, and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, o3 or Qwen3.6-35B-A3B?
Qwen3.6-35B-A3B supports 262k tokens, while o3 supports 200k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is cheaper, o3 or Qwen3.6-35B-A3B?
Qwen3.6-35B-A3B is cheaper on tracked token pricing. o3 costs $2/1M input and $8/1M output tokens. Qwen3.6-35B-A3B costs $0.15/1M input and $1/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is o3 or Qwen3.6-35B-A3B open source?
o3 is listed under Proprietary. Qwen3.6-35B-A3B is listed under Apache 2.0. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, o3 or Qwen3.6-35B-A3B?
Both o3 and Qwen3.6-35B-A3B expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, o3 or Qwen3.6-35B-A3B?
Both o3 and Qwen3.6-35B-A3B expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Where can I run o3 and Qwen3.6-35B-A3B?
o3 is available on OpenAI API, OpenRouter, and Vercel AI Gateway. Qwen3.6-35B-A3B is available on OpenRouter and Novita AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-06-08. Data sourced from public model cards and provider documentation.