Gemini 2.5 Flash Lite vs o3
At a Glance
| Compare |  Gemini 2.5 Flash LiteGoogle DeepMind |  o3OpenAI |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.10Google AI ↗ · Aug 29, 2026 | $1.00Openrouter ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $0.40Google AI ↗ · Aug 29, 2026 | $4.00Openrouter ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 1,049K | 200K |
| Model facts checked | Aug 29, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Gemini 2.5 Flash-Lite | o3 |
|---|---|---|
| Developer | Google DeepMind | OpenAI |
| Family | Gemini 2 5 | O3 |
| Model | Gemini 2.5 Flash-Lite | o3 |
| Version | Gemini 2.5 Flash-Lite | o3 |
| Lifecycle | active | active |
| Released | Unknown | 2025-04-16 |
| Knowledge cutoff | 2025-01-01 | 2024-06-01 |
| Input modalities | Text, Image, Video, Audio, Document | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,049K | 200K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Google AI (Standard), Google Gemini (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, structured_outputs, tools |
Gemini 2.5 Flash Lite Capabilities
o3 Capabilities
Related Comparisons
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|---|---|---|---|
Gemini 2.5 Flash-LiteGoogle DeepMind | vs | GPT-6 AstraOpenAI | cross-developer peerstext |
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Gemini 2.5 Flash-LiteGoogle DeepMind | vs | Gemini 3.1 ProGoogle DeepMind | family variantstext |
 DeepSeek-V4.1-FlashDeepSeek | vs | Gemini 2.5 Flash-LiteGoogle DeepMind | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs | Grok 4.6xAI | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs |  Qwen3.8-MaxQwen | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs |  Kimi-K3Moonshot AI | cross-developer peerstext |
 MiniMax-M3MiniMax | vs | Gemini 2.5 Flash-LiteGoogle DeepMind | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs |  GLM-5.3Z.ai | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs |  Hy4 previewTencent | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | Gemini 2.5 Flash-LiteGoogle DeepMind | cross-developer peerstext |
Gemini 2.5 Flash-LiteGoogle DeepMind | vs |  Mistral Large 3Mistral AI | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
Gemini 2.5 Flash Lite vs o3 FAQs
Is Gemini 2.5 Flash Lite or o3 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Gemini 2.5 Flash Lite and o3, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Gemini 2.5 Flash Lite or o3?+
Gemini 2.5 Flash Lite is $0.10 and o3 is $1.00 per million tokens, so Gemini 2.5 Flash Lite is cheaper on this metric. Gemini 2.5 Flash Lite is $0.40 and o3 is $4.00 per million tokens, so Gemini 2.5 Flash Lite is cheaper on this metric.
Which has a larger context window, Gemini 2.5 Flash Lite or o3?+
Gemini 2.5 Flash Lite has the larger sourced context window. Gemini 2.5 Flash Lite supports 1,049K and o3 supports 200K.
Which performs better in benchmarks, Gemini 2.5 Flash Lite or o3?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Gemini 2.5 Flash Lite or o3 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Gemini 2.5 Flash Lite is not marked open weight; o3 is not marked open weight.
Can Gemini 2.5 Flash Lite and o3 understand images?+
Gemini 2.5 Flash Lite is documented with image input; o3 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Gemini 2.5 Flash Lite or o3?+
o3 has the larger sourced maximum output: Gemini 2.5 Flash Lite supports 66K and o3 supports 100K output tokens.
Do Gemini 2.5 Flash Lite and o3 support reasoning and tool use?+
Gemini 2.5 Flash Lite: reasoning, tool calling, and image input. o3: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Gemini 2.5 Flash Lite or o3?+
Gemini 2.5 Flash Lite has 2 sourced provider routes; o3 has 2, a tie.
Which offers better value, Gemini 2.5 Flash Lite or o3?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.