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AnthropicGoogleLLM matchup
Claude Sonnet 5.5vs.Gemini 3.8 Flash
Which one is better?
Claude Sonnet 5.5 performs better than Gemini 3.8 Flash, but costs 2.7 times as much.
Claude Sonnet 5.5
Rank 5
Gemini 3.8 Flash
Rank 20
Claude Sonnet 5.5
Gemini 3.8 Flash
Claude Sonnet 5.5
Gemini 3.8 Flash
Claude Sonnet 5.5
Rank 21 of 478
Gemini 3.8 Flash
Rank 1 of 478
Choose Claude Sonnet 5.5 for
No clear advantage for Gemini 3.8 Flash.
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Where is the difference?
Strengths at a glance
Sonnet 5.5Gemini 3.8 FlashMedian of all ranked models
95 % range: Sonnet 5.5 119.5 to 130.9, Gemini 3.8 Flash 97.2 to 102.6.
The same values and verdicts as the bars below. In the close-up the net starts at 90 points, just below the weaker model's lowest value; the reference group average is 100. Not in the net because a model has no own value there or the data are too thin: Multimodal.
Sonnet 5.5 is ahead in 9 of 10 areas, Gemini 3.8 Flash in none.
Sonnet 5.5 ahead: 9too little data: 1
Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.
Show 3 more areas that do not count toward the overall index
Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.
Claude Sonnet 5.5 vs. Gemini 3.8 Flash at the same effort
Both models measured at the same reasoning efforts. This shows whether a lead comes from the model or only from more compute.
The gap compares only the Artificial Analysis test series in which both models are measured at that effort. Tied below 3 points, ahead only beyond two standard errors.
Which model for which task?
Everyday tasks, translated from the area values above. Each row names the values it rests on.
Claude Sonnet 5.5 vs. Gemini 3.8 Flash in our own test
The same prompt for both models. We show the latest attempt without fixes; it does not count toward the overall index.
Claude Sonnet 5.5

Oct 1, 2026 · 28 s · $0.04
Test details
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- anthropic/claude-sonnet-5.5
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 3,886 tokens
- Cost of the attempt
- $0.0389
- Response time
- 28.2 s
- API model reported in response
- anthropic/claude-sonnet-5.5
- Pinned endpoint
- Anthropic | anthropic/claude-sonnet-5.5-20260928
- Temperature
- Provider default
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
Visually reviewed. This individual test does not establish overall model quality.
Gemini 3.8 Flash
The response reached the token limit. No complete recording is available.
Oct 5, 2026 · 40 s · $0.03
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
Test details
- Run date
- Oct 5, 2026
- API provider
- openrouter
- Requested API model
- google/gemini-3.8-flash
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 8,188 tokens
- Cost of the attempt
- $0.0307
- Response time
- 40.2 s
- API model reported in response
- google/gemini-3.8-flash
- Pinned endpoint
- Google AI Studio | google/gemini-3.8-flash-20260902
- Temperature
- Provider default
- Test protocol
- community-visual-tests-v1
- Technical checks
- Failed
Earlier attempts (3)
- Oct 2, 2026API request failedReasoning setting: high
- Oct 1, 2026API request failedReasoning setting: high
- Sep 7, 2026API request failedReasoning setting: high
SVG short test
SVG short test
One SVG task with the same fixed settings for every model, without hidden thinking.
Prompt
Return only one standalone SVG of a pelican riding a bicycle. Use viewBox="0 0 800 600", simple shapes, two clearly visible wheels and a recognizable pelican with a long beak. At most 30 SVG elements and 1800 characters. No Markdown, explanations, comments, scripts, animation, CSS or external resources.
Claude Sonnet 5.5
Unavailable in this round
Gemini 3.8 Flash
Unavailable in this round
Claude Sonnet 5.5 and Gemini 3.8 Flash in the overall index
Every model with a place in the overall index, both models of this matchup highlighted. You can add or hide other models.
Overall index (Gradually Meta-Score v5)
20 of 95 models
Popularity compared
How often the models are searched for, used and mentioned, on a scale from 0 to 100.
Gemini 3.8 Flash is more popular than Claude Sonnet 5.5: 88 to 79 out of 100.
Over time
Weekly values from October 18, 2026 to November 13, 2026
Claude Sonnet 5.5Gemini 3.8 Flash
All data side by side
The better value is bold. For the overall index only when the gap is clear.
| Metric | Claude Sonnet 5.5 | Gemini 3.8 Flash |
|---|---|---|
| Intelligence | ||
| Overall indexpoints, 100 = reference group average, higher is better | 121.9 | 106.4 |
| Rank | Rank 5 of 95 | Rank 20 of 95 |
| Price per 1M tokens | ||
| Inputwhat you send | $2 | $0.75 |
| Outputwhat the model writes | $10 | $3.75 |
| Cost per task (own tests)average of 2 original-protocol tasks both models passed (SVG short test not included) | $0.037 | $0.044 |
| Speed | ||
| Tokens per second | 103 | 81 |
| Popularity | ||
| Popularitysearch, usage and mentions, 0 to 100 | 79Rank 21 of 478 | 88Rank 1 of 478 |
| Technical | ||
| Context windowhow much text the model reads at once | 1 M tokens≈ 1,500 A4 pages | 1.05 M tokens≈ 1,570 A4 pages |
| Knowledge cutoff | June 2026 | March 2026 |
| Released | Sep 28, 2026 | Sep 2, 2026 |
| Availability | Active | Active |
| Open weights | no | no |
Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis
Is there a better choice?
Overall index 110.5, rank 14$0.10 input and $0.50 output per 1M tokens
View profileOverall index 130.9, rank 1$8 input and $40 output per 1M tokens
Sonnet 5.5 vs. Claude Fable 5.2Shared benchmarks
Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.
A: Claude Sonnet 5.5B: Gemini 3.8 Flash
Show 54 more benchmarks
More comparisons
Compare Claude Sonnet 5.5 and Gemini 3.8 Flash with the models people compare them with most often.
Compare another matchup
Predecessor and successor
The most popular comparisons
- 1Claude Opus 5.5 vs. Gemini 3.8 Flash
- 2Gemini 3.8 Flash vs. DeepSeek-V4.1-Flash
- 3Claude Sonnet 5.5 vs. DeepSeek-V4.1-Flash
- 4Claude Opus 4.6 vs. Gemini 3.8 Flash
- 5GPT-6 Luna vs. Gemini 3.8 Flash
- 6Claude Opus 5.5 vs. Claude Sonnet 5.5
- 7Gemini 3.8 Flash vs. Gemini 3.5 Flash-Lite
- 8Claude Sonnet 5.5 vs. GLM-5.3
- 9Claude Sonnet 4.6 vs. Gemini 3.8 Flash
Show all 87 comparisons
- 10Gemini 3.8 Flash vs. Gemini 3.1 Pro Preview
- 11Claude Sonnet 5.5 vs. Claude Haiku 5.5
- 12Claude Sonnet 5.5 vs. Claude Opus 5
- 13Gemini 3.8 Flash vs. GLM-5.3-Flash
- 14GPT-6 Sol vs. Gemini 3.8 Flash
- 15GPT-5.6 Sol vs. Gemini 3.8 Flash
- 16Gemini 3.8 Flash vs. Grok 4.7
- 17Claude Haiku 5.5 vs. Gemini 3.8 Flash
- 18Claude Sonnet 5.5 vs. Grok 4.7
- 19Claude Sonnet 5.5 vs. GPT-5.6 Terra
- 20GPT-6.1 Terra vs. Gemini 3.8 Flash
- 21Claude Sonnet 5.5 vs. Claude Fable 5.1
- 22GPT-5.6 Luna vs. Gemini 3.8 Flash
- 23Claude Sonnet 5.5 vs. Gemini 3.1 Pro Preview
- 24Claude Sonnet 5.5 vs. DeepSeek V4.1 Flash 1017
- 25Claude Opus 5 vs. Gemini 3.8 Flash
- 26Claude Sonnet 5.5 vs. GPT-6 Luna
- 27Claude Sonnet 5.5 vs. Kimi K3
- 28Gemini 3.8 Flash vs. DeepSeek-V4-Pro
- 29Claude Sonnet 5.5 vs. Qwen 3.8 27B
- 30Gemini 3.8 Flash vs. DeepSeek-V4-Flash
- 31Claude Sonnet 5.5 vs. Claude Opus 4.6
- 32Claude Sonnet 5.5 vs. DeepSeek-V4-Pro
- 33Gemini 3.8 Flash vs. DeepSeek V4.1 Flash 1017
- 34Claude Sonnet 5.5 vs. GPT-5.6 Luna
- 35Gemini 3.8 Flash vs. Qwen 3.8 27B
- 36Claude Sonnet 5.5 vs. GLM-5.2
- 37Claude Sonnet 5.5 vs. DeepSeek-V4-Flash
- 38Gemini 4 Carbon vs. Gemini 3.8 Flash
- 39Claude Sonnet 4.5 vs. Gemini 3.8 Flash
- 40Claude Sonnet 5.5 vs. GPT-6 Sol
- 41Claude Sonnet 5.5 vs. Gemini 3.5 Flash-Lite
- 42Claude Sonnet 5.5 vs. Claude Fable 5
- 43Claude Sonnet 5.5 vs. Qwen 3.8 Max 0902
- 44Claude Sonnet 5.5 vs. Gemini 3.6 Flash
- 45Claude Sonnet 5.5 vs. Claude Sonnet 4.6
- 46Claude Sonnet 5.5 vs. GPT-5.6 Sol
- 47Claude Sonnet 5.5 vs. GLM-5.3-Flash
- 48Gemini 3.8 Flash vs. Gemini 3.6 Flash
- 49GPT-6 Astra vs. Gemini 3.8 Flash
- 50Gemini 3.8 Flash vs. GLM-5.3
- 51Gemini 3.8 Flash vs. Grok 4.6
- 52Claude Sonnet 5.5 vs. Muse Spark 1.3
- 53Gemini 3.8 Flash vs. GLM-5.2
- 54Claude Sonnet 5.5 vs. Claude Opus 4.7
- 55Gemini 3.8 Flash vs. Muse Spark 1.3
- 56GPT-5.4 mini vs. Gemini 3.8 Flash
- 57Claude Sonnet 5.5 vs. GPT-6 Astra
- 58Claude Sonnet 5.5 vs. Claude Opus 4.8
- 59Gemini 3.8 Flash vs. Mistral Large 4
- 60Claude Sonnet 5 vs. Gemini 3.8 Flash
- 61Claude Sonnet 5.5 vs. Kimi K2.6
- 62Gemini 3.8 Flash vs. Kimi K3.1 Pro
- 63Claude Sonnet 5.5 vs. Grok 4.6
- 64Gemini 3.8 Flash vs. MiMo-V2.5-Pro
- 65Claude Sonnet 5.5 vs. GPT-6.1 Sol
- 66GPT-6.1 Sol vs. Gemini 3.8 Flash
- 67Claude Fable 5 vs. Gemini 3.8 Flash
- 68Claude Sonnet 5.5 vs. Claude Sonnet 4.5
- 69Claude Sonnet 5.5 vs. Gemini 3.7 Flash
- 70Claude Sonnet 5.5 vs. Claude Haiku 4.5
- 71GPT-5.5 vs. Gemini 3.8 Flash
- 72Claude Sonnet 5.5 vs. Mistral Large 4
- 73Claude Sonnet 5.5 vs. Mistral Medium 3.5
- 74Gemini 3.8 Flash vs. Gemini 3.5 Flash
- 75Claude Opus 4.8 vs. Gemini 3.8 Flash
- 76Claude Haiku 4.5 vs. Gemini 3.8 Flash
- 77Claude Sonnet 5.5 vs. GPT-5.4
- 78Claude Sonnet 5.5 vs. Gemini 3.5 Flash
- 79Claude Sonnet 5.5 vs. GPT-5.5
- 80Claude Sonnet 5.5 vs. Claude Opus 4.5
- 81Claude Sonnet 5.5 vs. Kimi K3.1 Pro
- 82Gemini 4 Argon vs. Gemini 3.8 Flash
- 83Claude Sonnet 5.5 vs. GPT-6.1 Terra
- 84Claude Sonnet 5.5 vs. Muse Wonder Full
- 85Claude Sonnet 5.5 vs. Gemini 4 Argon
- 86Claude Sonnet 5.5 vs. Gemini 4 Carbon
- 87Gemini 3.8 Flash vs. Muse Wonder Full