Claude Opus 4.8 vs Muse Spark 1.3
Wins 1 of 8 areas
Math
Wins 6 of 8 areas
Coding · Agents · Reasoning · Images and charts · Long documents · Following instructions
Muse Spark 1.3 is the stronger all-rounder.Claude Opus 4.8 is better at math.
Scores updated · 32 tests both models report · How we compare
Where each one wins
Tests won in each of the eight areas we test. 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 software03Muse Spark 1.33 of 5 tests · 2 ties
- ReasoningHard problems that need careful thinking03Muse Spark 1.33 of 5 tests · 2 ties
- AgentsCarrying out multi-step tasks on its own03Muse Spark 1.33 of 3 tests
- Images and chartsUnderstanding pictures, charts and video01Muse Spark 1.31 of 1 test
- Long documentsFinding answers in very long texts01Muse Spark 1.31 of 1 test
- Following instructionsDoing exactly what it is asked01Muse Spark 1.31 of 1 test
- MathCompetition and research-level math21Claude Opus 4.82 of 3 tests
- FactsGetting facts right instead of making them up11Even1 each
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.
Muse Spark 1.3 costs 82% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Muse Spark 1.3 pulls ahead
- Common-sense trick questionsSimpleBench+17points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+16.3points ahead
- Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+13.6points ahead
Where Claude Opus 4.8 pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+9.8points ahead
- Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+6points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+5.2points ahead
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.
CodingMuse Spark 1.3
- LiveBench · Agentic CodingMuse Spark 1.3 by 13.650.564.1+13.6
- LMArena · WebDevMuse Spark 1.3 by 103 rating points15561659+103 rating
- SciCodeMuse Spark 1.3 by 4.454.458.8+4.4
- LiveBench · Codingtie81.881.1tie
- Terminal-Bench 2.1tie84.684.3tie
AgentsMuse Spark 1.3
- τ-Bench V3 · BankingMuse Spark 1.3 by 16.334.250.5+16.3
- Terminal-Bench 4.0Muse Spark 1.3 by 11.621.733.3+11.6
- GDPValMuse Spark 1.3 by 11.347.759+11.3
ReasoningMuse Spark 1.3
- SimpleBenchMuse Spark 1.3 by 1764.881.8+17
- CritPtMuse Spark 1.3 by 420.924.9+4
- GPQA DiamondMuse Spark 1.3 by 1.59293.5+1.5
- LiveBench · Reasoningtie89.289.7tie
- Humanity's Last Examtie48.748.7tie
FactsEven
- AA-Omniscience · Non-hallucinationMuse Spark 1.3 by 6.460.767.1+6.4
- AA-Omniscience · AccuracyClaude Opus 4.8 by 5.248.843.6+5.2
Images and chartsMuse Spark 1.3
- LMArena · VisionMuse Spark 1.3 by 14 rating points12941308+14 rating
MathClaude Opus 4.8
- FrontierMath Tier 4Claude Opus 4.8 by 9.856.146.3+9.8
- FrontierMath Tiers 1-3 (v2)Claude Opus 4.8 by 68074+6
- LiveBench · MathematicsMuse Spark 1.3 by 1.794.396+1.7
Following instructionsMuse Spark 1.3
- LiveBench · Instruction FollowingMuse Spark 1.3 by 67278+6
Other results11 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.
- HiL-Bench (Tools-allowed)Muse Spark 1.3 by 31.635.366.9+31.6
- JobBenchMuse Spark 1.3 by 16.548.464.9+16.5
- DeepSWE 1.1Muse Spark 1.3 by 16.45975.4+16.4
- livebench_data_analysisMuse Spark 1.3 by 13.66679.6+13.6
- AA Agentic IndexMuse Spark 1.3 by 13.142.655.7+13.1
- OSWorld 2.0Muse Spark 1.3 by 11.255.766.9+11.2
- AA IntelligenceMuse Spark 1.3 by 6.341.848.1+6.3
- AA-OmniscienceClaude Opus 4.8 by 3.828.825+3.8
- DeepSearchQA (F1)Claude Opus 4.8 by 3.793.189.4+3.7
- livebench_languageMuse Spark 1.3 by 3.179.782.8+3.1
- Artificial Analysis Coding IndexMuse Spark 1.3 by 1.574.375.8+1.5
Questions people ask
Which is better, Claude Opus 4.8 or Muse Spark 1.3?
Muse Spark 1.3 wins six of the eight areas we test: coding, agents, reasoning, images and charts, long documents and following instructions. Claude Opus 4.8 wins math. They are level on facts.
Which is better for coding?
Muse Spark 1.3. It wins 3 of the 5 coding tests both models report; Claude Opus 4.8 wins none, and 2 are ties.
Which is cheaper?
Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens; Muse Spark 1.3 costs $1.25 and $4.25. That makes Muse Spark 1.3 about 82% 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 21 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 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.