Claude Sonnet 4 vs Llama 4 Scout
Wins 7 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents · Following instructions
Wins 0 of 7 areas
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Claude Sonnet 4 is the stronger all-rounder.Llama 4 Scout is cheaper.
Scores updated · 32 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 software40Claude Sonnet 44 of 4 tests
- ReasoningHard problems that need careful thinking30Claude Sonnet 43 of 4 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own20Claude Sonnet 42 of 2 tests
- Images and chartsUnderstanding pictures, charts and video20Claude Sonnet 42 of 2 tests
- FactsGetting facts right instead of making them up21Claude Sonnet 42 of 3 tests
- Long documentsFinding answers in very long texts10Claude Sonnet 41 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Sonnet 41 of 1 test
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.
Llama 4 Scout costs 95% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Claude Sonnet 4 pulls ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+63.6points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+50.3points ahead
- Reasons across sets of long documentsAA-LCR+42.6points ahead
Where Llama 4 Scout pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 32 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Sonnet 4
- SWE-bench VerifiedClaude Sonnet 4 by 63.672.79.1+63.6
- Terminal-Bench 2.1Claude Sonnet 4 by 32.636.33.7+32.6
- Terminal-Bench HardClaude Sonnet 4 by 29.631.11.5+29.6
- SciCodeClaude Sonnet 4 by 18.74021.3+18.7
AgentsClaude Sonnet 4
- τ-Bench V3 · BankingClaude Sonnet 4 by 13.416.73.3+13.4
- GDPValClaude Sonnet 4 by 9.79.70+9.7
ReasoningClaude Sonnet 4
- GPQA DiamondClaude Sonnet 4 by 1977.758.7+19
- Humanity's Last ExamClaude Sonnet 4 by 6.910.73.8+6.9
- ARC-AGI-2Claude Sonnet 4 by 5.95.90+5.9
- CritPttie0.30tie
FactsClaude Sonnet 4
- AA-Omniscience · Non-hallucinationClaude Sonnet 4 by 50.370.920.6+50.3
- AA-Omniscience · AccuracyClaude Sonnet 4 by 7.522.715.2+7.5
- Vectara HHEM hallucination ratelower is betterLlama 4 Scout by 2.610.37.7+2.6
Images and chartsClaude Sonnet 4
Following instructionsClaude Sonnet 4
- IFBenchClaude Sonnet 4 by 15.254.739.5+15.2
Other results15 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-OmniscienceClaude Sonnet 4 by 52.30.2-52.1+52.3
- τ²-Bench Telecom (AA run)Claude Sonnet 4 by 49.164.615.5+49.1
- HarmBenchClaude Sonnet 4 by 389860+38
- AIR-Bench 2024Claude Sonnet 4 by 3688.352.3+36
- LiveCodeBenchClaude Sonnet 4 by 35.768.532.8+35.7
- Artificial Analysis Coding IndexClaude Sonnet 4 by 29.437.68.2+29.4
- AA IntelligenceClaude Sonnet 4 by 10.818.98.1+10.8
- MMLU-ProClaude Sonnet 4 by 9.483.774.3+9.4
- bbqClaude Sonnet 4 by 9.196.687.5+9.1
- simple_safety_testsClaude Sonnet 4 by 310097+3
- anthropic_red_teamClaude Sonnet 4 by 2.799.296.5+2.7
- vectara_factual_consistencyLlama 4 Scout by 2.689.792.3+2.6
- XSTestClaude Sonnet 4 by 196.695.6+1
- vectara_avg_summary_lengthtie145.8137.3tie
- vectara_answer_ratetie98.699tie
Questions people ask
Which is better, Claude Sonnet 4 or Llama 4 Scout?
Claude Sonnet 4 wins all seven areas where both have results: coding, agents, reasoning, facts, images and charts, long documents and following instructions. Llama 4 Scout wins none, but costs 95% less.
Which is better for coding?
Claude Sonnet 4. It wins 4 of the 4 coding tests both models report; Llama 4 Scout wins none.
Which is cheaper?
Claude Sonnet 4 costs $3.00 per million input tokens and $15.00 per million output tokens; Llama 4 Scout costs $0.19 and $0.68. That makes Llama 4 Scout about 95% cheaper for the same work.
How do you compare the two?
We use the 32 benchmark tests both models have published scores on. The verdict counts the 17 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 15 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.