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OpenAI: GPT-5.3 Chat vs StepFun: Step 3.5 Flash
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Last updated at: 2026-03-03
| Metric | OpenAI: GPT-5.3 Chat none Release: 2026-03-03 | StepFun: Step 3.5 Flash medium Release: 2026-02-01 Free Available |
|---|---|---|
| Rank | #14 | #17 |
| Avg Score | 7.27 | 7.00 |
| Consistency | 8.26 | 8.32 |
| Cost per result | 2.835 | 0.000 |
| Total Cost | $0.256 | $0.000 |
| Tests Correct | ||
| Attempt pass rate | 73.8% | 73.8% |
| Flaky tests | 3 | 3 |
| Output Tokens | 16,339 | 60,502 |
| Reasoning Tokens | 0 | 117,044 |
Score vs Total Cost
Category Breakdown
| Anti-AI Tricks | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 7.33 | 7.49 | 77.8% | 1 | 3,091 | 0 | |
| StepFun: Step 3.5 Flash | 10.00 | 10.00 | 100.0% | 0 | 13,924 | 17,208 |
| Data parsing and extraction | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 9.88 | 10.00 | 100.0% | 0 | 942 | 0 | |
| StepFun: Step 3.5 Flash | 10.00 | 10.00 | 100.0% | 0 | 535 | 11,548 |
| Domain specific | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 1.00 | 4.41 | 33.3% | 2 | 8,264 | 0 | |
| StepFun: Step 3.5 Flash | 4.00 | 7.21 | 44.4% | 1 | 40,942 | 74,237 |
| Instructions following | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 8.50 | 9.99 | 50.0% | 0 | 1,455 | 0 | |
| StepFun: Step 3.5 Flash | 10.00 | 10.00 | 100.0% | 0 | 2,121 | 3,274 |
| Puzzle Solving | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 10.00 | 10.00 | 100.0% | 0 | 1,726 | 0 | |
| StepFun: Step 3.5 Flash | 2.00 | 4.96 | 33.3% | 2 | 2,705 | 6,975 |
| Tool Calling | Score | Consistency | Attempt pass rate | Flaky tests | Tests Correct | Output Tokens | Reasoning Tokens |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.3 Chat | 10.00 | 10.00 | 100.0% | 0 | 861 | 0 | |
| StepFun: Step 3.5 Flash | 10.00 | 10.00 | 100.0% | 0 | 275 | 3,802 |
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