Granite 3.1 8B Instruct vs Stockmark 2 100B Instruct
Granite 3.1 8B Instruct (2024) and Stockmark 2 100B Instruct (2025) are compact production models from IBM Research and Stockmark. Granite 3.1 8B Instruct ships a 128k-token context window, while Stockmark 2 100B Instruct ships a 128k-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.
Stockmark 2 100B Instruct is safer overall; choose Granite 3.1 8B Instruct when provider fit matters.
Decision scorecard
Local evidence first| Signal | Granite 3.1 8B Instruct | Stockmark 2 100B Instruct |
|---|---|---|
| Best for | general production evaluation | general production evaluation |
| Decision fit | Long context | Long context |
| Context window | 128k | 128k |
| Cheapest output | - | - |
| Provider routes | 0 tracked | 1 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Local decision data tags Granite 3.1 8B Instruct for Long context.
- Stockmark 2 100B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Stockmark 2 100B Instruct for Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Granite 3.1 8B Instruct
Unavailable
No complete token price in local provider data
Stockmark 2 100B Instruct
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Granite 3.1 8B Instruct and Stockmark 2 100B Instruct; plan for SDK, billing, or endpoint changes.
- No overlapping tracked provider route is sourced for Stockmark 2 100B Instruct and Granite 3.1 8B Instruct; plan for SDK, billing, or endpoint changes.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-12-18 | 2025-06-01 |
| Context window | 128k | 128k |
| Parameters | 8B | 100B |
| Architecture | Dense decoder-only transformer: 40 layers, 4096 embed, GQA 32/8 heads, RoPE, SwiGLU | decoder only |
| License | Apache 2.0(OSI) | Open Weights |
| Openness | Open source | Open weights |
| Commercial use | Commercial use allowed | - |
| Knowledge cutoff | 2024-04 | - |
Pricing and availability
| Pricing attribute | Granite 3.1 8B Instruct | Stockmark 2 100B Instruct |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers | - |
Pricing not yet sourced for either model.
Capabilities
| Capability | Granite 3.1 8B Instruct | Stockmark 2 100B Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint is close: both models cover the core production surface. That makes context budget, benchmark fit, and provider maturity more important than a simple checklist. If your application depends on one integration detail, verify it against the provider route you plan to use, not just the base model listing.
Pricing coverage is uneven: Granite 3.1 8B Instruct has no token price sourced yet and Stockmark 2 100B Instruct has no token price sourced yet. 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 Granite 3.1 8B Instruct when provider fit are central to the workload. Choose Stockmark 2 100B 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. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Which has a larger context window, Granite 3.1 8B Instruct or Stockmark 2 100B Instruct?
Granite 3.1 8B Instruct supports 128k tokens, while Stockmark 2 100B Instruct supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Granite 3.1 8B Instruct or Stockmark 2 100B Instruct open source?
Granite 3.1 8B Instruct is listed under Apache 2.0. Stockmark 2 100B Instruct is listed under Open Weights. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Where can I run Granite 3.1 8B Instruct and Stockmark 2 100B Instruct?
Granite 3.1 8B Instruct is available on the tracked providers still being sourced. Stockmark 2 100B Instruct is available on NVIDIA NIM. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Granite 3.1 8B Instruct over Stockmark 2 100B Instruct?
Stockmark 2 100B Instruct is safer overall; choose Granite 3.1 8B Instruct when provider fit matters. If your workload also depends on provider fit, start with Granite 3.1 8B Instruct; if it depends on provider fit, run the same evaluation with Stockmark 2 100B Instruct.
Continue comparing
Last reviewed: 2026-05-19. Data sourced from public model cards and provider documentation.