Gemini 3.5 Flash-Lite vs Grok 4.5: Specs & Benchmark Comparison
Gemini 3.5 Flash-Lite is developed by Google, while Grok 4.5 comes from xAI. Both were released in July 2026.
The two models share 2 published benchmarks. Grok 4.5 leads on 2 of them. The widest gaps are on Terminal-Bench 2.1, where Grok 4.5 scores 83.0% against 54.0%; SWE-Bench Pro, where Grok 4.5 scores 65.0% against 54.2%. Averaged across everything we track, Gemini 3.5 Flash-Lite sits at 53.2% and Grok 4.5 at 52.9%.
Gemini 3.5 Flash-Lite is the cheaper API at $0.30 per million input tokens and $2.50 per million output tokens, roughly 7 times cheaper than Grok 4.5 at $2 and $6. Gemini 3.5 Flash-Lite takes the larger context window at 1M tokens, compared with 500K for Grok 4.5. Both accept text and images as input.
| Characteristic | Gemini 3.5 Flash-Lite | Grok 4.5 |
|---|---|---|
| Company | xAI | |
| Release Date | July 21, 2026 | July 16, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 500K |
| Context (output) | 66K | — |
| Input Price / 1M | $0.30 | $2.00 |
| Output Price / 1M | $2.50 | $6.00 |
| Average Score | 53.2% | 52.9% |
| Benchmarks | ||
| Terminal-Bench 2.1 | 54.0% | 83.0% |
| SWE-Bench Pro | 54.2% | 65.0% |
Visual Benchmark Comparison
Verdict
Gemini 3.5 Flash-Lite leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Gemini 3.5 Flash-Lite — 0.5, Grok 4.5 — 0.5.
Gemini 3.5 Flash-Lite is 2.9x cheaper: input $0.30/1M vs $2.00/1M tokens.
Gemini 3.5 Flash-Lite supports a larger context: 1M vs 500K tokens.
Both models were released around the same time: 7/21/2026 and 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Gemini 3.5 Flash-Lite or Grok 4.5?
Which model is cheaper — Gemini 3.5 Flash-Lite or Grok 4.5?
Which has a larger context window — Gemini 3.5 Flash-Lite or Grok 4.5?
The Gemini 3.5 Flash-Lite 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 Gemini 3.5 Flash-Lite or Grok 4.5 page. See also the complete list of AI model comparisons.