Solar Pro 4 vs Grok Build 0.1
At a Glance
| Compare |  Solar Pro 4Upstage | |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| CostLower is better · Published-token output estimate | UnrankedNot in the 44-model eligible cohort | #1 of 44$0.0020 per LiveBench case |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.090Upstage ↗ · Sep 18, 2026 | $1.00Xai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $0.36Upstage ↗ · Sep 18, 2026 | $2.00Xai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 524K | 256K |
| Model facts checked | Sep 18, 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
Side-by-Side Facts
| Field | Solar Pro 4 | Grok Build 0.1 |
|---|---|---|
| Developer | Upstage | xAI |
| Family | Solar Pro | Grok Build |
| Model | Solar Pro 4 | Grok Build 0.1 |
| Version | Solar Pro 4 | Grok Build 0.1 |
| Lifecycle | active | preview |
| Released | 2026-08-14 | 2026-05-29 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 524K | 256K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Upstage (Standard) | Xai (Standard) |
| Capabilities | agents, chat, generation, reasoning, structured_outputs, tools | chat, generation, reasoning, structured_outputs, tools |
| Supported languages | English, Korean, Japanese | Unknown |
| Training data cutoff | February 2026 | Unknown |
Solar Pro 4 Capabilities
Grok Build 0.1 Capabilities
Related Comparisons
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|---|---|---|---|
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Solar Pro 4Upstage | vs | Grok 4.6xAI | cross-developer peerstext |
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Solar Pro 4Upstage | vs |  GLM-5.3Z.ai | cross-developer peerstext |
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Primary Evidence
Sources and Freshness
Questions
Solar Pro 4 vs Grok Build 0.1 FAQs
Is Solar Pro 4 or Grok Build 0.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Solar Pro 4 and Grok Build 0.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Solar Pro 4 or Grok Build 0.1?+
Solar Pro 4 is $0.090 and Grok Build 0.1 is $1.00 per million tokens, so Solar Pro 4 is cheaper on this metric. Solar Pro 4 is $0.36 and Grok Build 0.1 is $2.00 per million tokens, so Solar Pro 4 is cheaper on this metric.
Which has a larger context window, Solar Pro 4 or Grok Build 0.1?+
Solar Pro 4 has the larger sourced context window. Solar Pro 4 supports 524K and Grok Build 0.1 supports 256K.
Which performs better in benchmarks, Solar Pro 4 or Grok Build 0.1?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Solar Pro 4 or Grok Build 0.1 be self-hosted?+
Solar Pro 4 is the only model in this pair currently marked as self-hostable. Solar Pro 4 is not marked open weight; Grok Build 0.1 is not marked open weight.
Can Solar Pro 4 and Grok Build 0.1 understand images?+
Solar Pro 4 is not documented with image input; Grok Build 0.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Solar Pro 4 or Grok Build 0.1?+
Neither has a larger sourced maximum output. Solar Pro 4 is 131K and Grok Build 0.1 is —.
Do Solar Pro 4 and Grok Build 0.1 support reasoning and tool use?+
Solar Pro 4: reasoning and tool calling. Grok Build 0.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Solar Pro 4 or Grok Build 0.1?+
Solar Pro 4 has 1 sourced provider route; Grok Build 0.1 has 1, a tie.
Which offers better value, Solar Pro 4 or Grok Build 0.1?+
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.