Model comparison
Claude Haiku 4.5 Thinking vs Exaone 4.0 1.2B
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Haiku 4.5 Thinking unranked (Not scored); Exaone 4.0 1.2B #179 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Haiku 4.5 Thinking and Exaone 4.0 1.2B share 0 comparable benchmark results. 0 of 8 categories are comparable. 2 results are unique to Claude Haiku 4.5 Thinking; 11 to Exaone 4.0 1.2B.
Updated July 23, 2026- Shared results
- 0
- Claude Haiku 4.5 Thinking only
- 2
- Exaone 4.0 1.2B only
- 11
- Comparable categories
- 0 / 8
Benchmark data for Claude Haiku 4.5 Thinking and Exaone 4.0 1.2B is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Claude Haiku 4.5 Thinking has the larger context window at 200K, compared with 128K for Exaone 4.0 1.2B.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Haiku 4.5 Thinking | Exaone 4.0 1.2B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Haiku 4.5 ThinkingNot available | Exaone 4.0 1.2BNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Claude Haiku 4.5 ThinkingNot available | Exaone 4.0 1.2BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Haiku 4.5 ThinkingNot available | Exaone 4.0 1.2BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Haiku 4.5 Thinking200K | Exaone 4.0 1.2B128K | Claude Haiku 4.5 Thinking lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Claude Haiku 4.5 Thinking | Exaone 4.0 1.2B | Result |
|---|---|---|---|
| τ²-bench resultsSource | — | 20.5% | Not comparable |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Claude Haiku 4.5 Thinking | Exaone 4.0 1.2B | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | — | 2.8% | Not comparable |
| AA-GPQA DiamondSource | — | 42.4% | Not comparable |
| AA-HLESource | — | 5.8% | Not comparable |
| AA-Omniscience IndexSource | — | -82.6% | Not comparable |
| AA-Omniscience AccuracySource | — | 4.7% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 91.5% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Claude Haiku 4.5 Thinking | Exaone 4.0 1.2B | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1152 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Claude Haiku 4.5 Thinking | Exaone 4.0 1.2B | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 25.3% | Not comparable |
Frequently Asked Questions (2)
Can I compare Claude Haiku 4.5 Thinking and Exaone 4.0 1.2B on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
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