Claude 3.7 Sonnet 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 3.7 Sonnet 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 3.7 Sonnet2 of 3 tests · 1 tie
- CodingWriting and fixing software20Claude 3.7 Sonnet2 of 2 tests
- FactsGetting facts right instead of making them up20Claude 3.7 Sonnet2 of 2 tests
- Long documentsFinding answers in very long texts10Claude 3.7 Sonnet1 of 1 test
- Following instructionsDoing exactly what it is asked10Claude 3.7 Sonnet1 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 94% 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 3.7 Sonnet pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+51.3points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+24.3points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+17.9points 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 3.7 Sonnet
- Terminal-Bench HardClaude 3.7 Sonnet by 21.221.20+21.2
- SciCodeClaude 3.7 Sonnet by 13.640.326.7+13.6
ReasoningClaude 3.7 Sonnet
- GPQA DiamondClaude 3.7 Sonnet by 24.377.252.9+24.3
- Humanity's Last ExamClaude 3.7 Sonnet by 5.39.74.4+5.3
- CritPttie0.90tie
FactsClaude 3.7 Sonnet
- AA-Omniscience · Non-hallucinationClaude 3.7 Sonnet by 51.3608.7+51.3
- AA-Omniscience · AccuracyClaude 3.7 Sonnet by 14.32813.7+14.3
Following instructionsClaude 3.7 Sonnet
- IFBenchClaude 3.7 Sonnet by 17.948.330.4+17.9
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 3.7 Sonnet by 64.4-0.7-65.1+64.4
- τ²-Bench Telecom (AA run)Claude 3.7 Sonnet by 54.754.70+54.7
- AA Agentic IndexClaude 3.7 Sonnet by 37370+37
- Artificial Analysis Coding IndexClaude 3.7 Sonnet by 27.536.48.9+27.5
- AA IntelligenceClaude 3.7 Sonnet by 12.117.75.6+12.1
Questions people ask
Which is better, Claude 3.7 Sonnet or Reka Flash 3?
Claude 3.7 Sonnet wins all five areas where both have results: coding, reasoning, facts, long documents and following instructions. Reka Flash 3 wins none, but costs 94% less.
Which is better for coding?
Claude 3.7 Sonnet. It wins 2 of the 2 coding tests both models report; Reka Flash 3 wins none.
Which is cheaper?
Claude 3.7 Sonnet costs $3.00 per million input tokens and $15.00 per million output tokens; Reka Flash 3 costs $0.20 and $0.80. That makes Reka Flash 3 about 94% 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.