deepseek-v4-pro vs gemini-3.5-flash
Side-by-side comparison of deepseek-v4-pro and gemini-3.5-flash: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. gemini-3.5-flash outperforms deepseek-v4-pro on 3 of 5 shared benchmarks.
Fireworks AI
deepseek-v4-pro
Input / 1M
$1.74
Output / 1M
$3.48
Context
1M
Model ID
fireworks/deepseek-v4-pro
gemini-3.5-flash
Input / 1M
$1.50
Output / 1M
$9.00
Context
1.0M
Model ID
google/gemini-3.5-flash
Benchmark comparison
Intelligence Indexreasoning
deepseek-v4-pro53.0%
gemini-3.5-flash52.0%
Coding Indexcoding
deepseek-v4-pro68.8%
gemini-3.5-flash70.1%
GPQA Diamondreasoning
deepseek-v4-pro92.8%
gemini-3.5-flash92.2%
Terminal-Bench Hardagentic
deepseek-v4-proN/A
gemini-3.5-flash40.9%
τ²-Benchagentic
deepseek-v4-proN/A
gemini-3.5-flash95.3%
SciCodecoding
deepseek-v4-pro49.2%
gemini-3.5-flash53.1%
Humanity's Last Examreasoning
deepseek-v4-pro39.3%
gemini-3.5-flash42.7%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| deepseek-v4-pro | gemini-3.5-flash | |
|---|---|---|
| Input price / 1M | $1.74 | $1.50 |
| Output price / 1M | $3.48 | $9.00 |
| Context window | 1M tokens | 1.0M tokens |
| Max output | 131K tokens | 66K tokens |
| Vision input | N/A | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | N/A | N/A |
| Provider | Fireworks AI | Google LLC (Gemini API) |
Questions people ask
Is deepseek-v4-pro better than gemini-3.5-flash?
gemini-3.5-flash outperforms deepseek-v4-pro on 3 of 5 shared benchmarks. See the benchmark comparison above for specifics: deepseek-v4-pro and gemini-3.5-flash have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, deepseek-v4-pro or gemini-3.5-flash?
deepseek-v4-pro is cheaper. deepseek-v4-pro costs $1.74/$3.48 per 1M input/output tokens, while gemini-3.5-flash costs $1.50/$9.00.
Can I use deepseek-v4-pro and gemini-3.5-flash through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "fireworks/deepseek-v4-pro" and "google/gemini-3.5-flash", no other code changes needed.
What are the context windows?
deepseek-v4-pro supports up to 1M tokens of context. gemini-3.5-flash supports up to 1.0M tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between deepseek-v4-pro and gemini-3.5-flash with one line of code
Requesty provides a single OpenAI-compatible API for 600+ models. Change the model parameter, not your code.