Hunyuan Hy4 Preview
Tencent’s Hunyuan Hy4 Preview, with published Vals AI results.
TencentReleased 28 August 2026Context 1M tokensOutput 64k tokensOpen weights$0.83 in / $2.50 out per Mtok
Where it stands
Rank compares tracked models with a score. Published shows the source’s rank and field size, when available.
| Benchmark | Score | Rank | Published | Leader | Behind |
|---|---|---|---|---|---|
| Vals IndexVals AI | 49.94% | 26of 33 | 27of 41 | Gemini 4 Argon | 18.96 pts |
| Vibe Code Bench v1.1Vals AI | 77.48% | 24of 38 | 25of 106 | Claude Sonnet 5.5 | 14.91 pts |
| ProgramBenchVals AI | 0.00% | 19of 29 | 23of 54 | Claude Opus 5.5 | 18.50 pts |
| Terminal-Bench 2.1Vals AI | 55.06% | 31of 35 | 48of 75 | Claude Opus 5.5 | 32.58 pts |
| ProofBench v1.1Vals AI | 75.00% | 13of 34 | 15of 46 | Claude Sonnet 5.5 | 25.00 pts |
| LegalBenchVals AI | 83.76% | 22of 27 | 46of 149 | Claude Fable 5 | 4.80 pts |
| Harvey's Legal Agent BenchmarkVals AI | 9.17% | 14of 37 | 17of 73 | Muse Spark 1.2 | 16.25 pts |
| BioMysteryBenchVals AI | 69.26% | 11of 19 | 11of 21 | Claude Sonnet 5.5 | 11.85 pts |
| Code MigrationVals AI | 47.43% | 12of 37 | 12of 71 | Claude Sonnet 5.5 | 22.40 pts |
| CyberBench v1.1Vals AI | 65.36% | 21of 31 | 27of 43 | GPT-6 Sol | 12.62 pts |
| EMBVals AI | 58.08% | 27of 37 | 34of 69 | Claude Fable 5.1 | 18.59 pts |
| Finance Agent (v2)Vals AI | 55.06% | 15of 37 | 19of 73 | Gemini 4 Argon | 10.34 pts |
| IOIVals AI | 59.33% | 15of 31 | 15of 38 | Gemini 4 Argon | 40.67 pts |
| Legal Research BenchVals AI | 45.19% | 14of 37 | 14of 72 | Muse Spark 1.3 Max | 10.10 pts |
| MedCodeVals AI | 43.25% | 27of 35 | 45of 104 | Claude Opus 5 | 20.32 pts |
| MedScribeVals AI | 83.60% | 29of 36 | 43of 106 | Claude Opus 5.5 | 7.83 pts |
| Public Benefits Bench v1.1Vals AI | 68.61% | 7of 29 | 7of 45 | Claude Opus 5 | 8.32 pts |
| SRE BenchVals AI | 2.29% | 13of 15 | 13of 16 | GPT-6 Astra | 54.58 pts |
| Tax Agent BenchVals AI | 63.71% | 20of 37 | 23of 64 | Claude Fable 5.1 | 13.93 pts |
Nearby on Vals Index
The two models above and below on the Vals Index (Vals AI), on every column where this model has a published number.
| Model | Vals Index | Vibe Code Bench v1.1 | ProgramBench |
|---|---|---|---|
| GPT-6 LunaOpenAI | 51.22% | 81.65% | 0.50% |
| Kimi K3Moonshot AI | 50.70% | 84.96% | 2.00% |
| Hunyuan Hy4 PreviewTencent | 49.94% | 77.48% | 0.00% |
| Muse Spark 1.2Meta | 49.29% | 79.10% | – |
| Qwen3.8 MaxAlibaba | 48.27% | 64.70% | 0.00% |
Results by benchmark
Independent and vendor results retain their own harnesses and effort settings.
| Benchmark | Independent run | As reported by a publisher |
|---|---|---|
| Terminal-Bench 4.0Agentic coding | 8.08%Vals AI | not published |
| Terminal-Bench 2.1Agentic coding | 55.06%Vals AI | not published |
| Vibe Code Bench v1.1Product coding | 77.48%Vals AI | not published |
| Terminal-Bench Science 0.1Agentic science | 1.43%Vals AI | not published |
| ProgramBenchAgentic coding | 0.00%Vals AI | not published |
| ProofBench v1.1Mathematics | 75.00%Vals AI | not published |
| LegalBenchProfessional knowledge | 83.76%Vals AI | not published |
| Harvey's Legal Agent BenchmarkProfessional knowledge | 9.17%Vals AI | not published |
| Vals IndexComposite | 49.94%Vals AI | not published |
| BioMysteryBenchAgentic science | 69.26%Vals AI | not published |
| Code MigrationAgentic coding | 47.43%Vals AI | not published |
| CyberBench v1.1Security | 65.36%Vals AI | not published |
| EMBFinancial modelling | 58.08%Vals AI | not published |
| Finance Agent (v2)Financial analysis | 55.06%Vals AI | not published |
| IOICompetitive programming | 59.33%Vals AI | not published |
| Legal Research BenchProfessional knowledge | 45.19%Vals AI | not published |
| MedCodeHealthcare administration | 43.25%Vals AI | not published |
| MedScribeHealthcare administration | 83.60%Vals AI | not published |
| Public Benefits Bench v1.1Public services | 68.61%Vals AI | not published |
| SRE BenchSecurity | 2.29%Vals AI | not published |
| Tax Agent BenchProfessional knowledge | 63.71%Vals AI | not published |
Sources
Read on 17 October 2026.
- Vals AI model pagewww.vals.ai/models/tencent_hy4-preview