Model comparison
Gemini 2.0 Flash vs Gemini 1.5 Flash
- Input
- $0.10 / 1M tokens (text, image, or video); $0.70 / 1M tokens for audio
- Output
- $0.40 / 1M tokens
- Context
- 1,048,576 tokens (1M)
- Released
- 2025-02-05
- Input
- $0.075 per 1M tokens (prompts ≤128K tokens)
- Output
- $0.30 per 1M tokens (prompts ≤128K tokens)
- Context
- 1,048,576 tokens (1M)
- Released
- 2024-05-14
Gemini 2.0 Flash scores higher on 1 of the 1 benchmarks both models report; Gemini 1.5 Flash is cheaper on input tokens ($0.1 vs $0.1 per 1M, 1.3×).
Specs and pricing side by side
| Spec | Gemini 2.0 Flash | Gemini 1.5 Flash |
|---|---|---|
| Maker | Googlesame | |
| Released | 2025-02-05 | 2024-05-14 |
| Context window | 1,048,576 tokens (1M) | 1,048,576 tokens (1M)same |
| Max output | 8,192 tokens | 8,192 tokenssame |
| Input price | $0.10 / 1M tokens (text, image, or video); $0.70 / 1M tokens for audio | $0.075 per 1M tokens (prompts ≤128K tokens) |
| Output price | $0.40 / 1M tokens | $0.30 per 1M tokens (prompts ≤128K tokens) |
| Parameters | Undisclosed — Google never published the parameter count | Not disclosed |
| License | Proprietary (Google) — closed source, served only via API | Proprietary |
| Weights | API only | API onlysame |
| Modalities | text input, image input, audio input, video input, text output | Text, Image, Audio, Video |
| Knowledge cutoff | August 2024 | November 2023 |
Benchmarks both models report
| Benchmark | Gemini 2.0 Flash | Gemini 1.5 Flash |
|---|---|---|
| MATH | 89.7% | 54.9% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Gemini 2.0 Flash if…
- You care about MATH (it scores higher on 1 shared benchmark).
- You need text input / image input / audio input / video input / text output input, which Gemini 1.5 Flash lacks.
- Your use case is: high-volume, cost-sensitive text generation, summarization, and classification.
Pick Gemini 1.5 Flash if…
- Cost matters: input tokens cost 1.3× less ($0.1 vs $0.1 per 1M).
- You need Text / Image / Audio / Video input, which Gemini 2.0 Flash lacks.
- Your use case is: summarizing long documents, transcripts, and multi-hour audio or video.
FAQ
Which is better, Gemini 2.0 Flash or Gemini 1.5 Flash?
Gemini 2.0 Flash scores higher on 1 of the 1 benchmarks both models report; Gemini 1.5 Flash is cheaper on input tokens ($0.1 vs $0.1 per 1M, 1.3×). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is Gemini 1.5 Flash?
Gemini 2.0 Flash: $0.10 / 1M tokens (text, image, or video); $0.70 / 1M tokens for audio input, $0.40 / 1M tokens output. Gemini 1.5 Flash: $0.075 per 1M tokens (prompts ≤128K tokens) input, $0.30 per 1M tokens (prompts ≤128K tokens) output (list API prices as published by each maker).
What are the context windows of Gemini 2.0 Flash and Gemini 1.5 Flash?
Gemini 2.0 Flash offers 1,048,576 tokens (1M) with up to 8,192 tokens output; Gemini 1.5 Flash offers 1,048,576 tokens (1M) with up to 8,192 tokens output.
Is Gemini 2.0 Flash newer than Gemini 1.5 Flash?
Gemini 2.0 Flash was released 2025-02-05; Gemini 1.5 Flash was released 2024-05-14.
Go deeper
- Gemini 2.0 Flash: full specs, pricing and benchmarks
- Gemini 1.5 Flash: full specs, pricing and benchmarks
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