| Signal | Gemini 2.5 Flash | Delta | Gemini 3.1 Pro Preview |
|---|---|---|---|
Capabilities | 83 | -- | |
Benchmarks | 81 | +1 | |
Pricing | 98 | +10 | |
Context window size | 96 | -- | |
Recency | 80 | -20 | |
Output Capacity | 80 | -- | |
| Overall Result | 2 wins | of 6 | 1 wins |
Score History
81.4
current score
Gemini 2.5 Flash
right now
80.2
current score
Gemini 2.5 Flash saves you $645.00/month
That's $7740.00/year compared to Gemini 3.1 Pro Preview at your current usage level of 100K calls/month.
| Metric | Gemini 2.5 Flash | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Overall Score | 81 | 80 | Gemini 2.5 Flash |
| Rank | #20 | #22 | Gemini 2.5 Flash |
| Quality Rank | #20 | #22 | Gemini 2.5 Flash |
| Adoption Rank | #20 | #22 | Gemini 2.5 Flash |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 1049K | -- |
| Pricing | $0.30/$2.50/M | $2.00/$12.00/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 83 | Gemini 2.5 Flash |
| Benchmarks | 81 | 79 | Gemini 2.5 Flash |
| Pricing | 98 | 88 | Gemini 2.5 Flash |
| Context window size | 96 | 96 | Gemini 2.5 Flash |
| Recency | 80 | 100 | Gemini 3.1 Pro Preview |
| Output Capacity | 80 | 80 | Gemini 2.5 Flash |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Here's what the scores mean for these two models:
Scores 81/100 (rank #20), placing it in the top 93% of all 290 models tracked.
Scores 80/100 (rank #22), placing it in the top 93% of all 290 models tracked.
With only a 1-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Gemini 2.5 Flash offers 80% better value per quality point. At 1M tokens/day, you'd spend $42.00/month with Gemini 2.5 Flash vs $210.00/month with Gemini 3.1 Pro Preview - a $168.00 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. Gemini 2.5 Flash also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($2.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (81/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Gemini 2.5 Flash and Gemini 3.1 Pro Preview are extremely close in overall performance (only 1.2000000000000028 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
Best for Quality
Gemini 2.5 Flash
Marginally better benchmark scores; both are excellent
Best for Cost
Gemini 2.5 Flash
80% lower pricing; better value at scale
Best for Reliability
Gemini 2.5 Flash
Higher uptime and faster response speeds
Best for Prototyping
Gemini 2.5 Flash
Stronger community support and better developer experience
Best for Production
Gemini 2.5 Flash
Wider enterprise adoption and proven at scale
by Google
| Capability | Gemini 2.5 Flash | Gemini 3.1 Pro Preview |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Gemini 2.5 Flash saves you $14.46/month
That's 80% cheaper than Gemini 3.1 Pro Preview at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Gemini 2.5 Flash | Gemini 3.1 Pro Preview |
|---|---|---|
| Context Window | 1.0M | 1.0M |
| Max Output Tokens | 65,535 | 65,536 |
| Open Source | No | No |
| Created | Jun 17, 2025 | Feb 19, 2026 |
Gemini 2.5 Flash scores 81/100 (rank #20) compared to Gemini 3.1 Pro Preview's 80/100 (rank #22), giving it a 1-point advantage. Gemini 2.5 Flash is the stronger overall choice, though Gemini 3.1 Pro Preview may excel in specific areas like certain benchmarks.
Gemini 2.5 Flash is ranked #20 and Gemini 3.1 Pro Preview is ranked #22 out of 290+ AI models. Rankings use a composite score combining benchmark performance (90%) from MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations, with capabilities and context window as tiebreakers (10%). Scores update hourly.
Gemini 2.5 Flash is cheaper at $2.50/M output tokens vs Gemini 3.1 Pro Preview's $12.00/M output tokens - 4.8x more expensive. Input token pricing: Gemini 2.5 Flash at $0.30/M vs Gemini 3.1 Pro Preview at $2.00/M.
Gemini 2.5 Flash has a larger context window of 1,048,576 tokens compared to Gemini 3.1 Pro Preview's 1,048,576 tokens. A larger context window means the model can process longer documents and conversations.