# GPT-5.2 Instant vs Step 3.7 Flash

> Side-by-side benchmark comparison for GPT-5.2 Instant and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-instant-vs-step-3-7-flash
- Last updated: September 8, 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 GPT-5.2 Instant and Step 3.7 Flash.

## Summary

- GPT-5.2 Instant and Step 3.7 Flash 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 | GPT-5.2 Instant | Step 3.7 Flash |
|----------|----------|----------|
| Creator | OpenAI | StepFun |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | 57.18 | 49.95 |
| Benchmarks Covered | 0 | 11 |
| Pricing (input/output) | $1.50 / $6.00 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 49 (Estimated · #64/152)

| Benchmark | GPT-5.2 Instant | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 59.5% | Coming soon |
| 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
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 47.6 (Estimated · #74/151)

| Benchmark | GPT-5.2 Instant | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | Coming soon | 56.3% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 59.5% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 70.9 (Unranked · 3 rankable rows)

| Benchmark | GPT-5.2 Instant | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 71.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 48.9 (Estimated · #91/182)

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.2 Instant public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 82.1 (#51/121)

## FAQ

### Can I compare GPT-5.2 Instant and Step 3.7 Flash 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

- [GPT-5.2 Instant vs GPT-5.2 Pro](/compare/gpt-5-2-instant-vs-gpt-5-2-pro)
- [Step 3.7 Flash vs GPT-5.2 Pro](/compare/gpt-5-2-pro-vs-step-3-7-flash)
- [GPT-5.2 Instant vs GPT-5.2](/compare/gpt-5-2-vs-gpt-5-2-instant)
- [Step 3.7 Flash vs GPT-5.2](/compare/gpt-5-2-vs-step-3-7-flash)

## Explore More

- [GPT-5.2 Instant profile](/models/gpt-5-2-instant)
- [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)