Granite Guardian 3.0 8B vs Marin 8B Instruct
Granite Guardian 3.0 8B (2025) and Marin 8B Instruct (2025) are compact production models from IBM Research and Marin. Granite Guardian 3.0 8B ships a 8k-token context window, while Marin 8B 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. It focuses on practical selection signals rather than broad model-family marketing.
Marin 8B Instruct fits 16x more tokens; pick it for long-context work and Granite Guardian 3.0 8B for tighter calls.
Decision scorecard
Local evidence first| Signal | Granite Guardian 3.0 8B | Marin 8B Instruct |
|---|---|---|
| Best for | general production evaluation | general production evaluation |
| Decision fit | Classification | Long context |
| Context window | 8k | 128k |
| Cheapest output | - | - |
| Provider routes | 1 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Local decision data tags Granite Guardian 3.0 8B for Classification.
- Marin 8B Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Marin 8B 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 Guardian 3.0 8B
Unavailable
No complete token price in local provider data
Marin 8B 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
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-03-01 | 2025-09-01 |
| Context window | 8k | 128k |
| Parameters | 8B | 8B |
| Architecture | Decoder Only | Decoder Only |
| License | Apache 2.0OSI-approved | Apache 2.0OSI-approved |
| Openness | Open source | Open source |
| Weights | Unknown | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | 2024-04 | 2024-07 |
Pricing and availability
| Pricing attribute | Granite Guardian 3.0 8B | Marin 8B Instruct |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers |
Pricing not yet sourced for either model.
Capabilities
| Capability | Granite Guardian 3.0 8B | Marin 8B Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| JSON / 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 scores are currently available for this pair.
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Last reviewed: 2026-09-08. Data sourced from public model cards and provider documentation.