DeepSeek V4 Flash 0731 vs Grok 4.5
DeepSeek V4 Flash 0731 (DeepSeek) and Grok 4.5 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- DeepSeek V4 Flash 0731 is cheaper on input tokens — $0.14 vs $2.00 per 1M.
- DeepSeek V4 Flash 0731 has a larger context window (1M vs 500K tokens).
- Grok 4.5 ranks higher for coding (91th vs 75th percentile).
| Attribute | DeepSeek V4 Flash 0731 | Grok 4.5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 154 |
| Coding | 75 | 91 |
| Math | — | 85 |
| Reasoning & Knowledge | 81 | 70 |
| Agentic & Tools | — | 75 |
| Specifications | ||
| Developer | DeepSeek | xAI |
| Family | DeepSeek | Grok |
| Released | Jul 31, 2026 | Jul 8, 2026 |
| Parameters | — | — |
| Availability | — | API access |
| Context window | 1M | 500K |
| Price — $/M input | $0.14 | $2.00 |
| Price — $/M output | $0.28 | $6.00 |
| Inputs | text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| GPQA Diamond | 91% | 93% |
| Humanity's Last Exam | 37% | 40% |
| SciCode | 50% | 54% |
| AIME 2024/2025 | — | 98% |
| APEX | — | 34% |
| ARC-AGI | — | 87% |
| ARC-AGI-2 | — | 53% |
| SimpleBench | — | 70% |
| SimpleQA Verified | — | 54% |
| WebDev Arena | — | 1551 |
| WeirdML | — | 46% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Which is cheaper, DeepSeek V4 Flash 0731 or Grok 4.5?
DeepSeek V4 Flash 0731 is cheaper on input tokens at $0.14 per million, versus $2.00 (representative OpenRouter pricing).
Which has a larger context window, DeepSeek V4 Flash 0731 or Grok 4.5?
DeepSeek V4 Flash 0731 supports up to 1M tokens, compared with 500K for the other.
Which is better for coding, DeepSeek V4 Flash 0731 or Grok 4.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.5 ranks higher — 91th vs 75th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.