Hy3 vs Grok 4.5
At a Glance
| Compare |  Hy3Tencent | Grok 4.5xAI |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | UnrankedNot in the 46-model eligible cohort | #25 of 4660.1 score · 3/3 sources · complete |
| CostLower is better · Published-token output estimate | UnrankedNot in the 44-model eligible cohort | #15 of 44$0.063 per LiveBench case |
| EfficiencyHigher is better · MM Efficiency v1.5 | UnrankedNot in the 38-model eligible cohort | #11 of 3859.2 score · 3/3 sources · complete |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.13Deepinfra ↗ · Sep 22, 2026 | $2.00Xai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $0.528Openrouter ↗ · Sep 22, 2026 | $6.00Xai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 262K | 500K |
| Model facts checked | Aug 28, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Hy3 | Grok 4.5 |
|---|---|---|
| LMArena Agent Arenaagent-2026-09-15-d25aabda0010 · outcome_score · leader | -5.2392% of row best · score · Hy3; 95% CI [-6.39472360, -4.07137134]; sessions 27371; observations 992576; rank 35 | 2.92100% of row best · score · Grok 4.5; 95% CI [1.93207740, 3.90928463]; sessions 38146; observations 1942877; rank 19 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · statistical tie | 1,440.5899% of row best · rating · hy3; 95% CI [1433.39024152, 1447.77894384]; votes 8047; rank 65 | 1,450.13100% of row best · rating · grok-4.5; 95% CI [1445.44268767, 1454.81726995]; votes 30103; rank 45 |
| Overall ResultCounted from the protocol-matched rows above · 1 tie | 0 benchmark winsNo overall winner | 1 benchmark winNo overall winner |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Hy3 | Grok 4.5 |
|---|---|---|
| Developer | Tencent | xAI |
| Family | Hy3 | Grok 4 |
| Model | Hy3 | Grok 4.5 |
| Version | Hy3 | Grok 4.5 |
| Lifecycle | active | active |
| Released | Unknown | 2026-07-16 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 262K | 500K |
| Total parameters | 298.8B | Unknown |
| Active parameters | 21B | Unknown |
| License | apache-2.0 | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Deepinfra (Standard), Hugging Face (Standard), Openrouter (Standard) | Xai (Standard) |
| Capabilities | chat, generation, tools | chat, generation, reasoning, structured_outputs, tools |
Hy3 Capabilities
Grok 4.5 Capabilities
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Primary Evidence
Sources and Freshness
Questions
Hy3 vs Grok 4.5 FAQs
Is Hy3 or Grok 4.5 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Hy3 and Grok 4.5, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Hy3 or Grok 4.5?+
Hy3 is $0.13 and Grok 4.5 is $2.00 per million tokens, so Hy3 is cheaper on this metric. Hy3 is $0.528 and Grok 4.5 is $6.00 per million tokens, so Hy3 is cheaper on this metric.
Which has a larger context window, Hy3 or Grok 4.5?+
Grok 4.5 has the larger sourced context window. Hy3 supports 262K and Grok 4.5 supports 500K.
Which performs better in benchmarks, Hy3 or Grok 4.5?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can Hy3 or Grok 4.5 be self-hosted?+
Hy3 is the only model in this pair currently marked as self-hostable. Hy3 is open weight; Grok 4.5 is not marked open weight.
Can Hy3 and Grok 4.5 understand images?+
Hy3 is not documented with image input; Grok 4.5 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Hy3 or Grok 4.5?+
Neither has a larger sourced maximum output. Hy3 is — and Grok 4.5 is —.
Do Hy3 and Grok 4.5 support reasoning and tool use?+
Hy3: tool calling. Grok 4.5: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Hy3 or Grok 4.5?+
Hy3 has 3 sourced provider routes; Grok 4.5 has 1, so Hy3 has broader tracked availability.
Which offers better value, Hy3 or Grok 4.5?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.