GPT-5.4 Pro vs Hunyuan Hy3 Preview
GPT-5.4 Pro (2026) and Hunyuan Hy3 Preview (2026) are frontier-tier reasoning models from OpenAI and Tencent AI Lab. GPT-5.4 Pro ships a 1.05m-token context window, while Hunyuan Hy3 Preview ships a 262k-token context window. On GeneBench-Pro, GPT-5.4 Pro leads by 15.4 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
GPT-5.4 Pro fits 4x more tokens; pick it for long-context work and Hunyuan Hy3 Preview for tighter calls.
Decision scorecard
Local evidence first| Signal | GPT-5.4 Pro | 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 | 1.05m | 262k |
| Cheapest output | $180/1M tokens | $0.26/1M tokens |
| Provider routes | 3 tracked | 2 tracked |
| Shared benchmarks | GeneBench-Pro leader | 1 shared |
Decision tradeoffs
- GPT-5.4 Pro holds a shared-benchmark lead on GeneBench-Pro, ahead by 15.4 points.
- GPT-5.4 Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- GPT-5.4 Pro has broader tracked provider coverage for fallback and route flexibility.
- GPT-5.4 Pro uniquely exposes Vision, Multimodal, and Structured outputs in local model data.
- Local decision data tags GPT-5.4 Pro for Coding, RAG, and Agents.
- 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.
GPT-5.4 Pro
$69,000
Cheapest tracked route/tier: OpenRouter
Hunyuan Hy3 Preview
$118
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $68,882. 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 $180/1M 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.
- GPT-5.4 Pro is $180/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- GPT-5.4 Pro adds Vision, Multimodal, and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-03-01 | 2026-04-22 |
| Context window | 1.05m | 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 | 2025-08 | - |
Pricing and availability
| Pricing attribute | GPT-5.4 Pro | Hunyuan Hy3 Preview |
|---|---|---|
| Input price |
| $0.07/1M tokens |
| Output price |
| $0.26/1M tokens |
| Providers |
Capabilities
| Capability | GPT-5.4 Pro | 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 | GPT-5.4 Pro | Hunyuan Hy3 Preview |
|---|---|---|
| GeneBench-Pro | 16.3 | 0.9 |
Continue comparing
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.