# Phonon-2 vs Quasar 438B

> Side-by-side benchmark comparison for Phonon-2 and Quasar 438B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/phonon-2-vs-quasar-438b
- Last updated: September 30, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Phonon-2 and Quasar 438B.

## Summary

- Phonon-2 and Quasar 438B 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 | Phonon-2 | Quasar 438B |
|----------|----------|----------|
| Creator | Fermion Research | Multiverse Computing |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | N/A | 1M |
| Independent public score (not head-to-head) | null | 46.11 |
| Benchmarks Covered | 0 | 2 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.60 / $1.80 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Phonon-2 public-lane score: Coming soon
- Quasar 438B public-lane score: 36.1 (Estimated · #63/117)

| Benchmark | Phonon-2 | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 69.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Phonon-2 public-lane score: Coming soon
- Quasar 438B public-lane score: 40.7 (Estimated · #59/143)

| Benchmark | Phonon-2 | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 69.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Phonon-2 public-lane score: Coming soon
- Quasar 438B public-lane score: 74.8 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Phonon-2 public-lane score: Coming soon
- Quasar 438B public-lane score: 43.4 (Estimated · #83/169)

## FAQ

### Can I compare Phonon-2 and Quasar 438B 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

- [Phonon-2 vs GPT-6 Astra](/compare/gpt-6-astra-vs-phonon-2)
- [Quasar 438B vs GPT-6 Astra](/compare/gpt-6-astra-vs-quasar-438b)
- [Phonon-2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-phonon-2)
- [Quasar 438B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-quasar-438b)

## Explore More

- [Phonon-2 profile](/models/phonon-2)
- [Quasar 438B profile](/models/quasar-438b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)