# Claude 3 Haiku vs GPT-OSS 120B

> Side-by-side benchmark comparison for Claude 3 Haiku and GPT-OSS 120B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-haiku-vs-gpt-oss-120b
- Last updated: September 29, 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 Claude 3 Haiku and GPT-OSS 120B.

## Summary

- Claude 3 Haiku and GPT-OSS 120B 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 | Claude 3 Haiku | GPT-OSS 120B |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 128K |
| Independent public score (not head-to-head) | 14.78 | 37.66 |
| Benchmarks Covered | 0 | 2 |
| Pricing (input/output) | $0.25 / $1.25 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- GPT-OSS 120B public-lane score: 20.5 (Estimated · #97/117)

| Benchmark | Claude 3 Haiku | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | Coming soon | 29.61% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- GPT-OSS 120B public-lane score: 26.4 (Estimated · #104/143)

| Benchmark | Claude 3 Haiku | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| React Native Evals | Coming soon | 71.6% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 41.2 (Unranked · 2 rankable rows)
- GPT-OSS 120B public-lane score: 58 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 26.4 (Unranked · 1 rankable row)
- GPT-OSS 120B public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 20.1 (Estimated · #167/169)
- GPT-OSS 120B public-lane score: 37.1 (Estimated · #107/169)

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 39.9 (#102/124)
- GPT-OSS 120B public-lane score: 82.8 (#46/124)

## FAQ

### Can I compare Claude 3 Haiku and GPT-OSS 120B 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

- [Claude 3 Haiku vs GPT-OSS 20B](/compare/claude-3-haiku-vs-gpt-oss-20b)
- [GPT-OSS 120B vs GPT-OSS 20B](/compare/gpt-oss-120b-vs-gpt-oss-20b)
- [Claude 3 Haiku vs GPT-6 Astra](/compare/claude-3-haiku-vs-gpt-6-astra)
- [GPT-OSS 120B vs GPT-6 Astra](/compare/gpt-6-astra-vs-gpt-oss-120b)

## Explore More

- [Claude 3 Haiku profile](/models/claude-3-haiku)
- [GPT-OSS 120B profile](/models/gpt-oss-120b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)