# Claude Sonnet 5.5 vs Gemini 4 Carbon

As of Nov 3, 2026, Claude Sonnet 5.5 leads Gemini 4 Carbon in 1 of 6 shared categories: Coding › Web dev.

## Pricing

Claude Sonnet 5.5: $4 per 1M blended tokens.

Gemini 4 Carbon: price per 1M tokens is unset in the catalog.

Claude Sonnet 5.5: closed weights.

Gemini 4 Carbon: closed weights.

## Benchmarks side by side

| Benchmark | Claude Sonnet 5.5 | Gemini 4 Carbon |
| --- | ---: | ---: |
| Excel Modeling Benchmark (EMB) | 75.9 | 76.5 |
| Finance Agent | 67.3 | 67.2 |
| Legal Research Bench | 48.1 | 55.8 |
| LMArena Text (style-controlled, coding) | 1529 | 1573 |
| LMArena Text (style-controlled, hard prompts) | 1505 | 1548 |
| LMArena Text (style-controlled, longer query) | 1499 | 1542 |
| LMArena Text (style-controlled, overall) | 1477 | 1528 |
| LMArena Text factuality | 1476 | 1522 |
| LMArena WebDev | 1770 | 1768 |
| Tax Agent Bench | 42.0 | 51.8 |
| Vals Index | 70.9 | 70.5 |
| Vibe Code Bench | 92.4 | 89.1 |

## Verdict

As of Nov 3, 2026, Claude Sonnet 5.5 leads Gemini 4 Carbon in 1 of 6 shared categories: Coding › Web dev.

- Which to pick, General LLM: As of Nov 3, 2026, Gemini 4 Carbon leads Claude Sonnet 5.5 in General LLM at #1 against #17.
- Which to pick, Reasoning: As of Nov 3, 2026, Gemini 4 Carbon leads Claude Sonnet 5.5 in Reasoning at #1 against #19.
- Which to pick, Coding › Web dev: As of Nov 3, 2026, Claude Sonnet 5.5 leads Gemini 4 Carbon in Coding › Web dev at #3 against #4.
- Which to pick, Long context: As of Nov 3, 2026, Gemini 4 Carbon leads Claude Sonnet 5.5 in Long context at #1 against #12.
- Which to pick, Factuality: As of Nov 3, 2026, Gemini 4 Carbon leads Claude Sonnet 5.5 in Factuality at #1 against #19.
- Which to pick, Legal: As of Nov 3, 2026, Gemini 4 Carbon leads Claude Sonnet 5.5 in Legal at #1 against #8.

As of Nov 3, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0 and Code Migration; methodology v1.0).

As of Nov 3, 2026, Gemini 4 Carbon is leading, crown pending confirmation in General LLM (since Nov 3, 2026; sources Vals Index and LMArena Text (style-controlled, overall); methodology v1.0).

## Related comparisons

- [Claude Opus 5.5 vs Claude Sonnet 5.5](https://isitsota.com/compare/claude-opus-5-5-vs-claude-sonnet-5-5)
- [Claude Sonnet 5.5 vs Gemini 4 Argon](https://isitsota.com/compare/claude-sonnet-5-5-vs-gemini-4-argon)
- [Claude Opus 5.5 vs Gemini 4 Carbon](https://isitsota.com/compare/claude-opus-5-5-vs-gemini-4-carbon)
- [Claude Sonnet 5.5 vs Muse Wonder](https://isitsota.com/compare/claude-sonnet-5-5-vs-muse-wonder)
- [Claude Sonnet 5.5 vs GPT-6 Astra](https://isitsota.com/compare/claude-sonnet-5-5-vs-gpt-6-astra)
- [Gemini 4 Argon vs Gemini 4 Carbon](https://isitsota.com/compare/gemini-4-argon-vs-gemini-4-carbon)
- [Gemini 4 Carbon vs Muse Wonder](https://isitsota.com/compare/gemini-4-carbon-vs-muse-wonder)
- [Gemini 4 Carbon vs GPT-6 Astra](https://isitsota.com/compare/gemini-4-carbon-vs-gpt-6-astra)