Grok-3 vs Trinity-Large-Thinking
Grok-3 (2025) and Trinity-Large-Thinking (2026) are frontier-tier reasoning models from xAI and Arcee AI. Grok-3 ships a 131k-token context window, while Trinity-Large-Thinking ships a 256k-token context window. On Google-Proof Q&A, Trinity-Large-Thinking leads by 4.6 pts. On pricing, Trinity-Large-Thinking costs $0.22/1M input tokens versus $0.80/1M 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.
Trinity-Large-Thinking is ~264% cheaper at $0.22/1M; pay for Grok-3 only for vision-heavy evaluation.
Decision scorecard
Local evidence first| Signal | Grok-3 | Trinity-Large-Thinking |
|---|---|---|
| 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 | RAG, Agents, and Long context |
| Context window | 131k | 256k |
| Cheapest output | $2.40/1M tokens | $0.85/1M tokens |
| Provider routes | 4 tracked | 3 tracked |
| Shared benchmarks | 1 shared | Google-Proof Q&A leader |
Decision tradeoffs
- Grok-3 has broader tracked provider coverage for fallback and route flexibility.
- Grok-3 uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Grok-3 for Coding, RAG, and Agents.
- Trinity-Large-Thinking holds a shared-benchmark lead on Google-Proof Q&A, ahead by 4.6 points.
- Trinity-Large-Thinking has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Trinity-Large-Thinking has the lower cheapest tracked output price at $0.85/1M tokens.
- Local decision data tags Trinity-Large-Thinking for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Grok-3
$1,240
Cheapest tracked route/tier: Chutes AI
Trinity-Large-Thinking
$389
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $852. 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.
- Trinity-Large-Thinking is $1.55/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Grok-3 is $1.55/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Grok-3 adds Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-02-17 | 2026-04-01 |
| Context window | 131k | 256k |
| Parameters | — | 400B |
| Architecture | - | Mixture of Experts |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Weights | Not released | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | 2025-04 | - |
Pricing and availability
| Pricing attribute | Grok-3 | Trinity-Large-Thinking |
|---|---|---|
| Input price | $0.80/1M tokens | $0.22/1M tokens |
| Output price | $2.40/1M tokens | $0.85/1M tokens |
| Providers |
Capabilities
| Capability | Grok-3 | Trinity-Large-Thinking |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Grok-3 | Trinity-Large-Thinking |
|---|---|---|
| Google-Proof Q&A | 84.6 | 89.2 |
Continue comparing
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Last reviewed: 2026-07-10. Data sourced from public model cards and provider documentation.