Phi-4 Reasoning Vision 15B vs Together AI Qwen2-72B-Instruct
Phi-4 Reasoning Vision 15B (2026) and Together AI Qwen2-72B-Instruct (2024) are compact production models from Microsoft Research and Alibaba. Phi-4 Reasoning Vision 15B ships a not-yet-sourced context window, while Together AI Qwen2-72B-Instruct ships a 33k-token context window. 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.
Phi-4 Reasoning Vision 15B is safer overall; choose Together AI Qwen2-72B-Instruct when provider fit matters.
Decision scorecard
Local evidence first| Signal | Phi-4 Reasoning Vision 15B | Together AI Qwen2-72B-Instruct |
|---|---|---|
| Best for | multimodal apps | general production evaluation |
| Decision fit | Vision | Classification and JSON / Tool use |
| Context window | — | 33k |
| Cheapest output | - | $0.70/1M tokens |
| Provider routes | 0 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Phi-4 Reasoning Vision 15B uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Phi-4 Reasoning Vision 15B for Vision.
- Together AI Qwen2-72B-Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Together AI Qwen2-72B-Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Together AI Qwen2-72B-Instruct uniquely exposes Structured outputs in local model data.
- Local decision data tags Together AI Qwen2-72B-Instruct for Classification and JSON / Tool use.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Phi-4 Reasoning Vision 15B
Unavailable
No complete token price in local provider data
Together AI Qwen2-72B-Instruct
$735
Cheapest tracked route/tier: Together AI
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Phi-4 Reasoning Vision 15B and Together AI Qwen2-72B-Instruct; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Together AI Qwen2-72B-Instruct adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Together AI Qwen2-72B-Instruct and Phi-4 Reasoning Vision 15B; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs before moving production traffic.
- Phi-4 Reasoning Vision 15B adds Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-03-12 | 2024-06-07 |
| Context window | — | 33k |
| Parameters | 15B | 72B |
| Architecture | - | Decoder Only |
| License | MITOSI-approved | Apache 2.0OSI-approved |
| Openness | Open source | Open source |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | 2025-03 | - |
Pricing and availability
| Pricing attribute | Phi-4 Reasoning Vision 15B | Together AI Qwen2-72B-Instruct |
|---|---|---|
| Input price | - | $0.70/1M tokens |
| Output price | - | $0.70/1M tokens |
| Providers | - |
Capabilities
| Capability | Phi-4 Reasoning Vision 15B | Together AI Qwen2-72B-Instruct |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on vision: Phi-4 Reasoning Vision 15B, multimodal input: Phi-4 Reasoning Vision 15B, and structured outputs: Together AI Qwen2-72B-Instruct. Both models share the core language-model surface, 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.
Pricing coverage is uneven: Phi-4 Reasoning Vision 15B has no token price sourced yet and Together AI Qwen2-72B-Instruct has $0.70/1M input tokens. Provider availability is 0 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Phi-4 Reasoning Vision 15B when vision-heavy evaluation are central to the workload. Choose Together AI Qwen2-72B-Instruct when provider fit and broader provider choice are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Is Phi-4 Reasoning Vision 15B or Together AI Qwen2-72B-Instruct open source?
Phi-4 Reasoning Vision 15B is listed under MIT. Together AI Qwen2-72B-Instruct 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, Phi-4 Reasoning Vision 15B or Together AI Qwen2-72B-Instruct?
Phi-4 Reasoning Vision 15B has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Phi-4 Reasoning Vision 15B or Together AI Qwen2-72B-Instruct?
Phi-4 Reasoning Vision 15B has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for structured outputs, Phi-4 Reasoning Vision 15B or Together AI Qwen2-72B-Instruct?
Together AI Qwen2-72B-Instruct has the clearer documented structured outputs signal in this comparison. If structured outputs is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Phi-4 Reasoning Vision 15B and Together AI Qwen2-72B-Instruct?
Phi-4 Reasoning Vision 15B is available on the tracked providers still being sourced. Together AI Qwen2-72B-Instruct is available on Together AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Phi-4 Reasoning Vision 15B over Together AI Qwen2-72B-Instruct?
Phi-4 Reasoning Vision 15B is safer overall; choose Together AI Qwen2-72B-Instruct when provider fit matters. If your workload also depends on vision-heavy evaluation, start with Phi-4 Reasoning Vision 15B; if it depends on provider fit, run the same evaluation with Together AI Qwen2-72B-Instruct.
Continue comparing
Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.