DeepSeek-V4-Flash-Vision-Exp vs Grok 4.5: Specs & Benchmark Comparison
DeepSeek-V4-Flash-Vision-Exp is developed by DeepSeek, while Grok 4.5 comes from xAI. Grok 4.5 was released in July 2026, and DeepSeek-V4-Flash-Vision-Exp followed a month later in August 2026.
The two models share 2 published benchmarks. DeepSeek-V4-Flash-Vision-Exp leads on 2 of them. The widest gaps are on DeepSWE, where DeepSeek-V4-Flash-Vision-Exp scores 59.3% against 53.0%; Terminal-Bench 2.1, where DeepSeek-V4-Flash-Vision-Exp scores 83.9% against 83.0%. Averaged across everything we track, DeepSeek-V4-Flash-Vision-Exp sits at 50.4% and Grok 4.5 at 52.9%.
DeepSeek-V4-Flash-Vision-Exp is the cheaper API at $0.22 per million input tokens and $0.66 per million output tokens, roughly 9 times cheaper than Grok 4.5 at $2 and $6. DeepSeek-V4-Flash-Vision-Exp takes the larger context window at 1M tokens, compared with 500K for Grok 4.5. Both accept text and images as input. On tooling, only Grok 4.5 supports function calling and only Grok 4.5 offers structured output.
| Characteristic | DeepSeek-V4-Flash-Vision-Exp | Grok 4.5 |
|---|---|---|
| Company | DeepSeek | xAI |
| Release Date | August 21, 2026 | July 16, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 500K |
| Context (output) | 393K | — |
| Input Price / 1M | $0.22 | $2.00 |
| Output Price / 1M | $0.66 | $6.00 |
| Average Score | 50.4% | 52.9% |
| Benchmarks | ||
| DeepSWE | 59.3% | 53.0% |
| Terminal-Bench 2.1 | 83.9% | 83.0% |
Visual Benchmark Comparison
Verdict
DeepSeek-V4-Flash-Vision-Exp leads in 3 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4-Flash-Vision-Exp — 0.5, Grok 4.5 — 0.5.
DeepSeek-V4-Flash-Vision-Exp is 9.1x cheaper: input $0.22/1M vs $2.00/1M tokens.
DeepSeek-V4-Flash-Vision-Exp supports a larger context: 1M vs 500K tokens.
DeepSeek-V4-Flash-Vision-Exp is newer: released 8/21/2026 vs 7/16/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4-Flash-Vision-Exp or Grok 4.5?
Which model is cheaper — DeepSeek-V4-Flash-Vision-Exp or Grok 4.5?
Which has a larger context window — DeepSeek-V4-Flash-Vision-Exp or Grok 4.5?
The DeepSeek-V4-Flash-Vision-Exp and Grok 4.5 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4-Flash-Vision-Exp or Grok 4.5 page. See also the complete list of AI model comparisons.