Language modelOpen weights
K2 Horizon 32B
Institute of Foundation Models
- Released
- September 3, 2026
- Data date
- October 7, 2026
- Input
- Text
- Output
- Text
K2 Horizon 32B is the family’s large dense model, handling text in a native context of 524,288 tokens. Its documented training runs through pretraining, four midtraining stages, and two SFT phases, with the corresponding checkpoints released publicly.
Specifications and access
| Specification | Value and source |
|---|---|
| Parameters | 32B total parametersSource |
| Active parameters | 32B parameters per tokenSource |
| Context window | 524,288 tokensSource |
| Input modalities | TextSource |
| Output modalities | TextSource |
| Documented training stages | Pretraining, four midtraining stages, and two SFT phases.Source |
| License | Apache 2.0Source |
Measurements without matching peer values
These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.
τ³-bench Banking (Show measurement, test conditions, and source)
- Source value
- 24.1
- Score
- 24.1
- Metric
- success rate
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
Terminal-Bench 2.1 (Show measurement, test conditions, and source)
- Source value
- 62.6
- Score
- 62.6
- Metric
- pass rate
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
SciCode (Show measurement, test conditions, and source)
- Source value
- 37.9
- Score
- 37.9
- Metric
- score
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
Humanity's Last Exam, without tools (Show measurement, test conditions, and source)
- Source value
- 25.2
- Score
- 25.2
- Metric
- accuracy
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
GPQA Diamond (Show measurement, test conditions, and source)
- Source value
- 82.8
- Score
- 82.8
- Metric
- accuracy
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
CritPt (Show measurement, test conditions, and source)
- Source value
- 2.9
- Score
- 2.9
- Metric
- score
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
AA-LCR (Show measurement, test conditions, and source)
- Source value
- 68
- Score
- 68
- Metric
- long-context reasoning score
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
AA-Omniscience Accuracy (Show measurement, test conditions, and source)
- Source value
- 18.2
- Score
- 18.2
- Metric
- accuracy
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
AA-Omniscience Non-Hallucination (Show measurement, test conditions, and source)
- Source value
- 69.7
- Score
- 69.7
- Metric
- non-hallucination rate
- Unit
- %
- Category
- source-specific
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- IFM model card
- Status
- active
- Retrieved at
- 2026-10-07
- Methodology
- Vendor-reported result. Current IFM/K2-Horizon-32B main-profile result. The model card identifies sft_2_2500 as the final checkpoint of SFT Phase 2. The profile training stages contain no FTPO phase; no FTPO checkpoint result is attributed to this profile.
Sources and data date
| Type | Evidence and data date |
|---|---|
| Input | Documented modalities. Retrieved October 7, 2026. |
| Output | Documented modalities. Retrieved October 7, 2026. |
| Research status | Research date October 7, 2026. 5 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not found in the inspected sources | artificial-analysis-profile Original wording Artificial Analysis does not list the exact K2 Horizon 32B model in its IFM roster; no AA components or index values were transferred from neighboring variants. |
| Not published | per-run-protocol-and-sample-counts Original wording The current card identifies SFT Phase 2 but does not publish sample counts or full harness details for most tests. |
| Unresolved | excluded-non-target-checkpoints Original wording The profile definition describes two SFT phases and no FTPO stage. The current IFM model card identifies sft_2_2500 as the final SFT Phase 2 checkpoint; only its nine current table values are retained. mid_4_final is a different intermediate checkpoint, and the older launch-announcement results do not identify their exact checkpoint. Those values were excluded. |
| Additional source | IFM K2 Horizon release announcement (retrieved October 7, 2026) · IFM K2 Horizon announcement · Editorial description reviewed October 7, 2026 |
| Additional source | IFM model card (retrieved October 7, 2026) |
| Additional source | Model metadata (retrieved October 7, 2026) |
| Additional source | Model metadata (retrieved October 7, 2026) |