# Quasar 438B vs Step 3.7 Flash

> Side-by-side benchmark comparison for Quasar 438B and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/quasar-438b-vs-step-3-7-flash
- Last updated: October 17, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Quasar 438B and Step 3.7 Flash share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Step 3.7 Flash has the lower published output-token price.
- Quasar 438B has the larger published context window at 1M.

## Model Snapshot

| Property | Quasar 438B | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Multiverse Computing | StepFun |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | 48.46 | 43.65 |
| Benchmarks Covered | 2 | 11 |
| Pricing (input/output) | $0.60 / $1.80 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 40 (Estimated · #67/128)
- Step 3.7 Flash public-lane score: 36.8 (Estimated · #76/128)

| Benchmark | Quasar 438B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 69.3% | 59.5% | Quasar 438B |
| BrowseComp | Coming soon | 75.8% | Coming soon |
| DeepSearchQA | Coming soon | 92.8% | Coming soon |
| Toolathlon | Coming soon | 49.5% | Coming soon |
| Claw-Eval | Coming soon | 67.1% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |
| Gert Labs | Coming soon | 51.57% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 41.2 (Estimated · #63/150)
- Step 3.7 Flash public-lane score: 30.2 (Estimated · #96/150)

| Benchmark | Quasar 438B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 69.3% | 59.5% | Quasar 438B |
| SWE-bench Pro | Coming soon | 56.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 78.3 (Unranked · 2 rankable rows)
- Step 3.7 Flash public-lane score: 76.5 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 75.4 (Unranked · 3 rankable rows)

| Benchmark | Quasar 438B | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 46.7 (Estimated · #92/184)
- Step 3.7 Flash public-lane score: 45 (Estimated · #97/184)

### Instruction Following

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 82.1 (#56/148)

## FAQ

### Is there enough evidence to pick between Quasar 438B and Step 3.7 Flash?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Quasar 438B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-quasar-438b)
- [Step 3.7 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-step-3-7-flash)
- [Quasar 438B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-quasar-438b)
- [Step 3.7 Flash vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-step-3-7-flash)

## Explore More

- [Quasar 438B profile](/models/quasar-438b)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)