Grok-1.5 benchmarks, pricing and specs
Grok-1.5 is a xAI model released on March 28, 2024 that takes text input and produces text. It is now listed as a legacy model. Its price is not published and accepts up to 128,000 tokens of context.
- Context window
- 128K
Data verified October 11, 2026 · Dataset 2026-10-12
Key facts
- Provider
- xAI
- Model family
- Grok 1.5
- Release date
- March 28, 2024
- Status
- Legacy
- Access
- API only
- API model id
- Not reported
- Context window
- 128,000 tokens
- Max output
- Not reported
- Input
- text
- Output
- text
- Task families
- text
- Declared capabilities
- reasoning
Grok-1.5 pricing
Independent benchmark results
Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. xAI's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.
No independent benchmark has published a result for Grok-1.5 yet. It is still compared below on price, context and capabilities.
Strengths, cautions and best uses
Strengths
- Grok-1.5 records API access for text inputs and a published 128,000-token context window
Cautions
- This record is marked legacy; confirm current availability and migration requirements before adoption
Best for
- Historical API evaluations needing a documented 128,000-token context
Alternatives to Grok-1.5
The closest current textmodels by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.
DeepSeek-R1
- From DeepSeek
Qwen2.5-VL 72B Instruct
- From Alibaba Qwen
Gemini 2.5 Pro
- 1.05M context window vs 128K
- From Google
Kimi-VL-A3B-Instruct
- From Moonshot Kimi
Other Grok 1.5 models
Grok-1.5 FAQ
What is the context window of Grok-1.5?
Grok-1.5 accepts up to 128,000 tokens of context. That ranks #40 of 45 current text models by context length.
Is Grok-1.5 open source or API only?
Grok-1.5 is available through xAI's API only; its weights are not published.
What are the best alternatives to Grok-1.5?
The closest current alternatives by price and measured performance are DeepSeek-R1 (from DeepSeek), Qwen2.5-VL 72B Instruct (from Alibaba Qwen), Gemini 2.5 Pro (1.05M context window vs 128K) and Kimi-VL-A3B-Instruct (from Moonshot Kimi).
Sources
- Announcing Grok-1.5 · xAI · official · verified August 6, 2026
- xAI models and pricing · xAI · official · verified October 11, 2026
Cite this page
Van Data Team. "Grok-1.5 Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-12. https://vandatateam.com/ai-model-benchmarks/grok-1-5
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Production evaluation
Deciding whether Grok-1.5 fits your workload?
Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- Evaluation cases and acceptance thresholds tied to real work
- Model routing, fallbacks and cost controls