Claude Haiku 4.5 vs Reka Flash 3
Wins 5 of 5 areas
Coding · Reasoning · Facts · Long documents · Following instructions
Wins 0 of 5 areas
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Claude Haiku 4.5 is the stronger all-rounder.Reka Flash 3 is cheaper.
Scores updated · 14 tests both models report · How we compare
Where each one wins
Tests won in each of the five 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.
- ReasoningHard problems that need careful thinking20Claude Haiku 4.52 of 3 tests · 1 tie
- CodingWriting and fixing software20Claude Haiku 4.52 of 2 tests
- FactsGetting facts right instead of making them up20Claude Haiku 4.52 of 2 tests
- 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
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.
Reka Flash 3 costs 83% 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 Haiku 4.5 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+64points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+23.9points ahead
- Code for real scientific research problemsSciCode+15.5points ahead
Where Reka Flash 3 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 14 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 27.327.30+27.3
- SciCodeClaude Haiku 4.5 by 15.542.226.7+15.5
ReasoningClaude Haiku 4.5
- GPQA DiamondClaude Haiku 4.5 by 14.367.252.9+14.3
- Humanity's Last ExamClaude Haiku 4.5 by 610.44.4+6
- CritPttie00tie
FactsClaude Haiku 4.5
- AA-Omniscience · Non-hallucinationClaude Haiku 4.5 by 6472.78.7+64
- AA-Omniscience · AccuracyClaude Haiku 4.5 by 4.31813.7+4.3
Following instructionsClaude Haiku 4.5
- IFBenchClaude Haiku 4.5 by 23.954.330.4+23.9
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-OmniscienceClaude Haiku 4.5 by 60.7-4.4-65.1+60.7
- τ²-Bench Telecom (AA run)Claude Haiku 4.5 by 54.754.70+54.7
- Artificial Analysis Coding IndexClaude Haiku 4.5 by 3543.98.9+35
- AA IntelligenceClaude Haiku 4.5 by 11.316.95.6+11.3
- AA Agentic IndexClaude Haiku 4.5 by 10.310.30+10.3
Questions people ask
Which is better, Claude Haiku 4.5 or Reka Flash 3?
Claude Haiku 4.5 wins all five areas where both have results: coding, reasoning, facts, long documents and following instructions. Reka Flash 3 wins none, but costs 83% less.
Which is better for coding?
Claude Haiku 4.5. It wins 2 of the 2 coding tests both models report; Reka Flash 3 wins none.
Which is cheaper?
Claude Haiku 4.5 costs $1.00 per million input tokens and $5.00 per million output tokens; Reka Flash 3 costs $0.20 and $0.80. That makes Reka Flash 3 about 83% cheaper for the same work.
How do you compare the two?
We use the 14 benchmark tests both models have published scores on. The verdict counts the 9 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.