# Celeris-1 vs Claude Sonnet 5

> Side-by-side benchmark comparison for Celeris-1 and Claude Sonnet 5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/celeris-1-vs-claude-sonnet-5
- Last updated: September 4, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Celeris-1 and Claude Sonnet 5.

## Summary

- Celeris-1 and Claude Sonnet 5 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Celeris-1 | Claude Sonnet 5 |
|----------|----------|----------|
| Creator | Celeris | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | null | 70.76 |
| Benchmarks Covered | 4 | 23 |
| Pricing (input/output) | $0.20 / $0.70 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 66 (Supported · #12/151)

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | Coming soon | 14.6% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 80.4% | Coming soon |
| BrowseComp | Coming soon | 84.7% | Coming soon |
| HLE w/ tools | Coming soon | 57.4% | Coming soon |
| OSWorld-Verified | Coming soon | 81.2% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 74.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 64.2 (Supported · #13/183)

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 85.2% | Coming soon |
| SWE-bench Pro | Coming soon | 63.2% | Coming soon |
| SWE Multilingual | Coming soon | 78.3% | Coming soon |
| SWE Multimodal | Coming soon | 28.1% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 80.4% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 42.7% | Coming soon |
| cursorBench32 | Coming soon | 61.5% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 82.4% | Coming soon |
| SWE-bench (Vals) | Coming soon | 79.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 77.5 (#13/48)

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 88.3% | Coming soon |
| CharXiv w/o tools | Coming soon | 77% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: 47.8 (Unranked · 3 rankable rows)
- Claude Sonnet 5 public-lane score: 76.4 (Unranked · 2 rankable rows)

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| DROP | 81.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: 67.1 (Supported · #20/181)

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro | 75.9% | Coming soon | Coming soon |
| HLE | Coming soon | 57.4% | Coming soon |
| HLE w/o tools | Coming soon | 43.2% | Coming soon |
| HLE-Verified | Coming soon | 31.0% | Coming soon |
| LABBench2 | Coming soon | 80.1% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.5% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: Coming soon

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 80.8% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Celeris-1 public-lane score: Coming soon
- Claude Sonnet 5 public-lane score: Coming soon

| Benchmark | Celeris-1 | Claude Sonnet 5 | Winner |
|-----------|-----------|-----------|--------|
| GSM8K | 93.7% | Coming soon | Coming soon |

## FAQ

### Can I compare Celeris-1 and Claude Sonnet 5 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Celeris-1 vs Claude Fable 5.1](/compare/celeris-1-vs-claude-fable-5-1)
- [Claude Sonnet 5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-sonnet-5)
- [Celeris-1 vs GPT-6 Astra](/compare/celeris-1-vs-gpt-6-astra)
- [Claude Sonnet 5 vs GPT-6 Astra](/compare/claude-sonnet-5-vs-gpt-6-astra)

## Explore More

- [Celeris-1 profile](/models/celeris-1)
- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)