Claude Haiku 4.5 vs Qwen3.5 Omni Plus
Wins 4 of 7 areas
Coding · Facts · Long documents · Following instructions
Wins 3 of 7 areas
Agents · Reasoning · Images and charts
Claude Haiku 4.5 wins more areas, narrowly.Qwen3.5 Omni Plus is cheaper and better at reasoning.
Scores updated · 16 tests both models report · How we compare
Where each one wins
Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software20Claude Haiku 4.52 of 2 tests
- FactsGetting facts right instead of making them up10Claude Haiku 4.51 of 2 tests · 1 tie
- Long documentsFinding answers in very long texts10Claude Haiku 4.51 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Haiku 4.51 of 1 test
- ReasoningHard problems that need careful thinking02Qwen3.5 Omni Plus2 of 3 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own01Qwen3.5 Omni Plus1 of 1 test
- Images and chartsUnderstanding pictures, charts and video01Qwen3.5 Omni Plus1 of 1 test
Agents, images and charts, long documents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Qwen3.5 Omni Plus costs 13% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Claude Haiku 4.5 pulls ahead
- Reasons across sets of long documentsAA-LCR+10.6points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+9.7points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+6.1points ahead
Where Qwen3.5 Omni Plus pulls ahead
- Real work tasks from 44 professionsGDPVal+22.4points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+15.4points ahead
- Harder college exam questions with imagesMMMU-Pro+11.9points ahead
Every test, side by side
All 16 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Haiku 4.5
- Terminal-Bench HardClaude Haiku 4.5 by 6.127.321.2+6.1
- SciCodeClaude Haiku 4.5 by 1.742.240.5+1.7
ReasoningQwen3.5 Omni Plus
- GPQA DiamondQwen3.5 Omni Plus by 15.467.282.6+15.4
- Humanity's Last ExamQwen3.5 Omni Plus by 4.510.414.9+4.5
- CritPttie00.6tie
FactsClaude Haiku 4.5
- AA-Omniscience · Non-hallucinationClaude Haiku 4.5 by 9.772.763+9.7
- AA-Omniscience · Accuracytie1817.4tie
Images and chartsQwen3.5 Omni Plus
- MMMU-ProQwen3.5 Omni Plus by 11.958.670.5+11.9
Long documentsClaude Haiku 4.5
- AA-LCRClaude Haiku 4.5 by 10.674.363.7+10.6
Following instructionsClaude Haiku 4.5
- IFBenchClaude Haiku 4.5 by 3.154.351.2+3.1
Other results5 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AA Agentic IndexQwen3.5 Omni Plus by 42.510.352.8+42.5
- τ²-Bench Telecom (AA run)Qwen3.5 Omni Plus by 33.654.788.3+33.6
- Artificial Analysis Coding IndexClaude Haiku 4.5 by 16.343.927.6+16.3
- AA-OmniscienceClaude Haiku 4.5 by 8.7-4.4-13.1+8.7
- AA IntelligenceQwen3.5 Omni Plus by 3.516.920.4+3.5
Questions people ask
Which is better, Claude Haiku 4.5 or Qwen3.5 Omni Plus?
Claude Haiku 4.5 wins four of the seven areas where both have results: coding, facts, long documents and following instructions. Qwen3.5 Omni Plus wins agents, reasoning and images and charts, and costs 13% less.
Which is better for coding?
Claude Haiku 4.5. It wins 2 of the 2 coding tests both models report; Qwen3.5 Omni Plus wins none.
Which is cheaper?
Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Qwen3.5 Omni Plus costs $0.40 and $4.80. That makes Qwen3.5 Omni Plus about 13% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 5 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.