Grok 4 vs Hunyuan Hy3 Preview
Grok 4 (2025) and Hunyuan Hy3 Preview (2026) are frontier-tier reasoning models from xAI and Tencent AI Lab. Grok 4 ships a 256k-token context window, while Hunyuan Hy3 Preview ships a 262k-token context window. On SWE-bench Verified, Grok 4 leads by 2.3 pts. On pricing, Hunyuan Hy3 Preview costs $0.07/1M input tokens versus $1.25/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Hunyuan Hy3 Preview is ~1794% cheaper at $0.07/1M; pay for Grok 4 only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Grok 4 | Hunyuan Hy3 Preview |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | reasoning-heavy apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 256k | 262k |
| Cheapest output | $2.50/1M tokens | $0.26/1M tokens |
| Provider routes | 4 tracked | 2 tracked |
| Shared benchmarks | SWE-bench Verified leader | 2 shared |
Decision tradeoffs
- Grok 4 holds a shared-benchmark lead on SWE-bench Verified, ahead by 2.3 points.
- Grok 4 has broader tracked provider coverage for fallback and route flexibility.
- Grok 4 uniquely exposes Vision, Multimodal, and Structured outputs in local model data.
- Local decision data tags Grok 4 for Coding, RAG, and Agents.
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview has the lower cheapest tracked output price at $0.26/1M tokens.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Grok 4
$1,625
Cheapest tracked route/tier: xAI Console
Hunyuan Hy3 Preview
$118
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $1,507. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Hunyuan Hy3 Preview is $2.24/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Structured outputs before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Grok 4 is $2.24/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Grok 4 adds Vision, Multimodal, and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-07-09 | 2026-04-22 |
| Context window | 256k | 262k |
| Parameters | — | 295B |
| Architecture | Decoder Only | Dense + MoE Hybrid |
| License | Proprietary | Tencent Hunyuan Community License |
| Openness | Proprietary | Open weights |
| Weights | Not released | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Grok 4 | Hunyuan Hy3 Preview |
|---|---|---|
| Input price | $1.25/1M tokens | $0.07/1M tokens |
| Output price | $2.50/1M tokens | $0.26/1M tokens |
| Providers |
Capabilities
| Capability | Grok 4 | Hunyuan Hy3 Preview |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Grok 4 | Hunyuan Hy3 Preview |
|---|---|---|
| SWE-bench Verified | 76.7 | 74.4 |
| Google-Proof Q&A | 87.5 | 87.2 |
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Last reviewed: 2026-07-10. Data sourced from public model cards and provider documentation.